cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.9deyn4
title: Occurrence Download

description: A dataset containing 84 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Norway",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Month is July",
 "OccurrenceStatus is Present",
 "TaxonKey is Solidago canadensis L.",
 "Year 2021-2021"
 ]
}

 The dataset includes 84 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0063243-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.a9ttyy
title: Occurrence Download

description: A dataset containing 9 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is USA.1_1",
 "TaxonKey is Ammocrypta vivax Hay, 1882"
 ]
}

 The dataset includes 9 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0045257-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vsfgsw
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Pilea ordinata C.D.Adams"
 ]
}

 The dataset includes 2 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0191554-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yqc7mn
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Puntius khugae Linthoingambi & Vishwanath, 2007"
 ]
}

 The dataset includes 3 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002342-160430102343922/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7tbwzx
title: Occurrence Download

description: A dataset containing 39871 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "Month is March",
 "Month is June"
 ]
 },
 "TaxonKey is Phainopepla nitens (Swainson, 1838)"
 ]
}

 The dataset includes 39871 records from 73 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0035050-190918142434337/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.pw8ex3
title: Occurrence Download

description: A dataset containing 24951 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Geometry POLYGON((-6.46822 36.67701,-5.79101 35.96532,-4.97837 36.17,-5.4318 36.93162,-6.05601 37.23228,-6.46822 36.67701))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 24951 records from 105 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046114-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.zw82xu
title: Occurrence Download

description: A dataset containing 99 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Boechera collinsii (Fernald) A.Löve & D.Löve",
 "HasCoordinate is true",
 "Year is greater than or equal to 1950"
 ]
}

 The dataset includes 99 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002342-160509122628363/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9xbzg5
title: Occurrence Download

description: A dataset containing 850 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Phanaeus endymion Harold, 1863"
 ]
}

 The dataset includes 850 records from 24 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0045666-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.lbbuv8
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "or" : [
 "ScientificName is × Microphoenix sahutii Carrière",
 "ScientificName is × Microphoenix sahutii",
 "ScientificName is x Microphoenix sahutii",
 "ScientificName is × Microphoenix sahutii Carrière",
 "ScientificName is × Microphoenix sahutii Carrière",
 "ScientificName is × Microphoenix sahutii Carrière"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005081-160803222355964/datasets/export for details.
DOI: 10.15468/dl.d34qur
title: Occurrence Download

description: A dataset containing 580866 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Circus cyaneus (Linnaeus, 1766)"
 ]
}

 The dataset includes 580866 records from 457 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0035048-190918142434337/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.x63vkj
title: Occurrence Download

description: A dataset containing 27 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Parapercis punctata (Cuvier, 1829)"
 ]
}

 The dataset includes 27 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0052384-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kmc1qc
title: Occurrence Download

description: A dataset containing 140370 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Equisetum palustre L."
 ]
}

 The dataset includes 140370 records from 382 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002342-160803222355964/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.385zj5
title: Occurrence Download

description: A dataset containing 2098090 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((10.58670799806848 40.92226156946407, 10.58670799806848 51.75700516880109, -10.173017805596453 51.75700516880109, -10.173017805596453 40.92226156946407, 10.58670799806848 40.92226156946407))",
 "EventDate is 2021-06-01,2021-06-30"
 ]
}

 The dataset includes 2098090 records from 1379 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0046113-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.11034565
title: FRACTESUS_CRIEPI_15Kh2MFAA_KJc_MCT_-160_11

description: Fractesus project. Fracture test mini-CT. Raw data 15Kh2MFAA. CRIEPI.
DOI: 10.5281/zenodo.11034566
title: FRACTESUS_CRIEPI_15Kh2MFAA_KJc_MCT_-160_11

description: Fractesus project. Fracture test mini-CT. Raw data 15Kh2MFAA. CRIEPI.
DOI: 10.15468/dl.o9m4sp
title: Occurrence Download

description: A dataset containing 2250 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hippocampus zosterae Jordan & Gilbert, 1882"
 ]
}

 The dataset includes 2250 records from 42 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004706-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-137428
title: Renewal, no. 31 (Feb./Mar. 1971)

description: [description english/roman)] Renewal, no. 31 (Feb./Mar. 1971). Published six times per year.
DOI: 10.15468/dl.2eacmz
title: Occurrence Download

description: A dataset containing 52 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Geophis dubius (Peters, 1861), Geophis dunni Schmidt, 1932)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 52 records from 17 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027163-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.epgbdz
title: Occurrence Download

description: A dataset containing 68 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Laniarius nigerrimus (Reichenow, 1879)"
 ]
}

 The dataset includes 68 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001276-240425142415019/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.evurft
title: Occurrence Download

description: A dataset containing 7163 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((-82.6348150999999973 27.7850643999999996, -82.6348150999999973 27.7884230700000003, -82.6348150999999973 27.7905377800000011, -82.6348150999999973 27.7922793100000014, -82.6348150999999973 27.7948916100000005, -82.6348150999999973 27.7975038999999988, -82.6329505199999943 27.7975038999999988, -82.6305888299999935 27.7975038999999988, -82.6287243499999988 27.7975038999999988, -82.6264869599999940 27.7975038999999988, -82.6247467799999953 27.7975038999999988, -82.6221364000000023 27.7975038999999988, -82.6221364000000023 27.7945184199999993, -82.6221364000000023 27.7921549200000015, -82.6221364000000023 27.7891694399999984, -82.6221364000000023 27.7871791200000011, -82.6221364000000023 27.7850643999999996, -82.6246224799999993 27.7850643999999996, -82.6279785499999946 27.7850643999999996, -82.6302159399999994 27.7850643999999996, -82.6322047200000043 27.7850643999999996, -82.6348150999999973 27.7850643999999996))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1932",
 "BasisOfRecord is one of (Human Observation, Living Specimen, Observation, Specimen, Machine Observation)"
 ]
}

 The dataset includes 7163 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0084047-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-137492
title: Renewal, no. 33 (June/July 1971)

description: [description english/roman)] Renewal, no. 33 (June/July 1971). Published six times per year.
DOI: 10.15468/dl.3haafw
title: Occurrence Download

description: A dataset containing 34 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Year 1000-2004",
 "TaxonKey is Lithobates tlaloci (Hillis & Frost, 1985)"
 ]
}

 The dataset includes 34 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0004706-190320150433242/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fwtdxg
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Tantilla brevicauda Mertens, 1952)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 8 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027212-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.mwjnq8
title: Occurrence Download

description: A dataset containing 98 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Conus sennottorum Rehder & Abbott, 1951"
 ]
}

 The dataset includes 98 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0084045-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-137426
title: Renewal, no. 31 (Feb./Mar. 1971)

description: [description english/roman)] Renewal, no. 31 (Feb./Mar. 1971). Published six times per year.
DOI: 10.15468/dl.4acwcv
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Anthurium pellucidopunctatum Sodiro"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038298-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-137506
title: Renewal, no. 33 (June/July 1971)

description: [description english/roman)] Renewal, no. 33 (June/July 1971). Published six times per year.
DOI: 10.15468/dl.7j9xts
title: Occurrence Download

description: A dataset containing 13 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Aegisthus aculeatus Giesbrecht, 1891"
 ]
}

 The dataset includes 13 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0111835-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-138466
title: Renewal, no. 58 (Aug./Sept. 1975)

description: [description english/roman)] Renewal, no. 58 (Aug./Sept. 1975). Published six times per year.
DOI: 10.15468/dl.br2ean
title: Occurrence Download

description: A dataset containing 11 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Armeria neglecta Girard"
 ]
}

 The dataset includes 11 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005856-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vpqpy3
title: Occurrence Download

description: A dataset containing 71 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Colobosaura modesta (Reinhardt & Lütken, 1862))",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 71 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027106-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.635xk9
title: Occurrence Download

description: A dataset containing 47 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Ecuador",
 "Geometry POLYGON((-83.41187 -5.56753,-74.35675 -5.56753,-74.35675 -1.94361,-83.41187 -1.94361,-83.41187 -5.56753))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Podocarpus sprucei Parl."
 ]
}

 The dataset includes 47 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0111833-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-138437
title: Renewal, no. 57 (June/July 1975)

description: [description english/roman)] Renewal, no. 57 (June/July 1975). Published six times per year.
DOI: 10.5281/zenodo.11034346
title: The Data for Gaseous Dynamical Friction on Elliptical Keplerian Orbits

description: The results for the the changing orbital elements of single perturbers and equal mass binaries due to Gaseous Dynamical Friction. The arrays ecc0, Mp represent the eccentricities and Mach numbers over which the change in semi-major axis (adot) eccentricity (edot) and precession (omegadot) are calculated.
DOI: 10.15468/dl.4bgm6u
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Pelturagonia cephalum (Mocquard, 1890), Pelturagonia cephalum Mocquard, 1890)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 10 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027112-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.a2s2pm
title: Occurrence Download

description: A dataset containing 70 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DatasetKey is Bacteria from Penguin Guano, Antarctica"
 ]
}

 The dataset includes 70 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005874-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-138631
title: Renewal, no. 61 (Feb./Mar. 1976)

description: [description english/roman)] Renewal, no. 61 (Feb./Mar. 1976). Published six times per year.
DOI: 10.15468/dl.frybah
title: Occurrence Download

description: A dataset containing 7 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is China",
 "TaxonKey is Panthera uncia (Schreber, 1775)"
 ]
}

 The dataset includes 7 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0117625-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.prw9vt
title: Occurrence Download

description: A dataset containing 2697 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Ophisaurus attenuatus Baird, 1880, Ophisaurus attenuatus Cope, 1880)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 2697 records from 34 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027109-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-138605
title: Renewal, no. 61 (Feb./Mar. 1976)

description: [description english/roman)] Renewal, no. 61 (Feb./Mar. 1976). Published six times per year.
DOI: 10.15468/dl.4b9748
title: Occurrence Download

description: A dataset containing 222 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Cleora insolita (Butler, 1878)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 222 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0129127-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5wu8gr
title: Occurrence Download

description: A dataset containing 425 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Leymus racemosus (Lam.) Tzvelev",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 425 records from 36 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005894-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-138625
title: Renewal, no. 61 (Feb./Mar. 1976)

description: [description english/roman)] Renewal, no. 61 (Feb./Mar. 1976). Published six times per year.
DOI: 10.15468/dl.d4y3jm
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Pelturagonia borneensis (Inger, 1960))",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 4 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027104-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4ecm3c
title: Occurrence Download

description: A dataset containing 52396 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Poa bulbosa L.",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 52396 records from 349 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005859-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-136880
title: Renewal, no. 15 (June/July 1968)

description: [description english/roman)] Renewal, no. 15 (June/July 1968). Published six times per year.
DOI: 10.15468/dl.3n77uw
title: Occurrence Download

description: A dataset containing 76 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Argentina",
 "TaxonKey is Calibrachoa ovalifolia (Miers) Stehmann & Semir"
 ]
}

 The dataset includes 76 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0119696-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.j7q9x7
title: Occurrence Download

description: A dataset containing 25 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Geophis blanchardi Taylor & Smith, 1939)",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation, Machine Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 25 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027117-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-136919
title: Renewal, no. 16 (Aug./Sept. 1968)

description: [description english/roman)] Renewal, no. 16 (Aug./Sept. 1968). Published six times per year.
DOI: 10.15468/dl.jj5eaa
title: Occurrence Download

description: A dataset containing 1948 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Cyanobacteria from freshwater lakes in the Azores Archipelago, Portugal"
 ]
}

 The dataset includes 1948 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005860-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/pcra-c14-137244
title: Renewal, no. 18 (Dec. 1968 / Jan. 1969)

description: [description english/roman)] Renewal, no. 18 (Dec. 1968 / Jan. 1969). Published six times per year.
DOI: 10.25549/pcra-c14-136838
title: Renewal, no. 14 (Apr./May 1968)

description: [description english/roman)] Renewal, no. 14 (Apr./May 1968). Published six times per year.