cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48370/ofd/gcjvdy
title: Sorex araneus - 20076, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-07-15, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/pwyizy
title: Sorex araneus - 3855, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-10-03, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/3drq1n
title: Sorex araneus - 76500, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1968-08-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/fdsm1b
title: Sorex araneus - 33400, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1963-09-08, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/w2fxjk
title: Sorex araneus - 10609, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-13, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/wemej7
title: Sorex araneus - 110602, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1973-08-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/8wb33r
title: Sorex araneus - 18602, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1957-07-25, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/abdm2t
title: Sorex araneus - 99923, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-11-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/i3vklo
title: Sorex araneus - 2641, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-07-28, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/yzbrnp
title: Sorex araneus - 116087, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1975-02-06, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/tayje0
title: Sorex araneus - 97887, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-06-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/kjtmdc
title: Sorex araneus - 16742, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1956-04-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/n1vh1a
title: Sorex araneus - 23653, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1960-03-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/habsny
title: Sorex araneus - 20087, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-07-17, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/1gwsiu
title: Sorex araneus - 16502, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1956-02-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lulsr0
title: Sorex araneus - 28106, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1962-06-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/9j1lhd
title: Sorex araneus - 4211, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-04-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/s7mi4u
title: Sorex araneus - 164208, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1996-07-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/crf5al
title: Sorex araneus - 33918, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1963-10-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mifktr
title: Sorex araneus - 112014, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1974-03-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/b5r7ul
title: Sorex araneus - 163944, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1995-07-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/1yfsyn
title: Sorex araneus - 5392, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-07-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/xalv7x
title: Sorex araneus - 6313, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-08-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/06jxuv
title: Sorex araneus - 28456, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1962-07-26, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/xldt99
title: Sorex araneus - 98806, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-07-31, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/igzhin
title: Sorex araneus - 25032, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1961-06-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/oq11x7
title: Sorex araneus - 119290, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1976-07-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/fsjmff
title: Sorex araneus - 22734, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1959-07-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/46t36t
title: Sorex araneus - 106228, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1972-07-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/uuioe1
title: Sorex araneus - 1961, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-07-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/86f8io
title: Sorex araneus - 12228, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-08-07, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/gi6syy
title: Sorex araneus - 98328, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-07-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/w3o8nr
title: Sorex araneus - 20290, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-08-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/nkla7k
title: Sorex araneus - 4744, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-06-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/iynm8q
title: Sorex araneus - 19956, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-05-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/vkptdg
title: Sorex araneus - 3416, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-08-27, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/hzanuz
title: Sorex araneus - 6144, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-08-19, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/crbfbh
title: Sorex araneus - 116085, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1975-02-06, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/n0ixkd
title: Sorex araneus - 98692, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-07-28, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/5gsfkt
title: Sorex araneus - 91010, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1970-06-13, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/d5hpju
title: Sorex araneus - 104386, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1972-03-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/shbsmi
title: Sorex araneus - 33584, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1963-09-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ux4th4
title: Sorex araneus - 15787, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-11-12, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/g9rrey
title: Sorex araneus - 5288, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-07-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/dfjfmg
title: Sorex araneus - 10444, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-11, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/thvzua
title: Sorex araneus - 53375, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-07-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mcbmme
title: Sorex araneus - 34448, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1963-12-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/pcwfrp
title: Sorex araneus - 7313, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-12-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lanry9
title: Sorex araneus - 22397, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1959-06-25, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/2tllbw
title: Sorex araneus - 20485, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-10-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/gaqhhw
title: Sorex araneus - 5169, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1954-07-11, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/dtzwi7
title: Sorex araneus - 131781, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1979-07-10, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/mffsto
title: Sorex araneus - 85447, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1969-05-14, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/s0bbtl
title: Sorex araneus - 106617, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1972-07-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/n2xzgi
title: Sorex araneus - 51268, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-03-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/onzlut
title: Sorex araneus - 114067, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1974-07-04, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/b7ylri
title: Sorex araneus - 166935, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1998-09-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/4tli3k
title: Sorex araneus - 112007, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1974-03-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/yyiljj
title: Sorex araneus - 98066, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1971-07-04, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/02sgdj
title: Sorex araneus - 23163, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1959-08-31, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/nbxhu4
title: Sorex araneus - 65122, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1967-09-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/67n6bf
title: Sorex araneus - 11382, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-23, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/uqzzif
title: Sorex araneus - 90963, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1970-06-09, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ll99in
title: Sorex araneus - 28225, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1962-06-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/agjwo4
title: Sorex araneus - 7844, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-04-04, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ol78bg
title: Sorex araneus - 19913, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-04-18, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/bnapiu
title: Sorex araneus - 54547, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-09-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ouhizn
title: Sorex araneus - 163790, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1995-07-11, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/tqebi1
title: Sorex araneus - 110566, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1973-08-10, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/trexrz
title: Sorex araneus - 16663, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1956-04-01, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/ntgten
title: Sorex araneus - 124117, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1977-01-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/iyw7px
title: Sorex araneus - 109980, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1973-04-21, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/aynlcq
title: Sorex araneus - 51628, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-04-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/lbwcnd
title: Sorex araneus - 86674, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1969-08-22, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/aetpze
title: Sorex araneus - 20105, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-07-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/4wxuxc
title: Sorex araneus - 115806, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1974-11-20, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/oq125k
title: Sorex araneus - 2591, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1953-07-25, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/0wx77r
title: Sorex araneus - 20333, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1958-09-09, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/6fjfyf
title: Sorex araneus - 52312, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1966-07-05, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/8vlk7d
title: Sorex araneus - 110176, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1973-06-16, in: Białowieża National Park, Poland. Material type:
DOI: 10.48370/ofd/w73ebl
title: Sorex araneus - 119445, Zoological collection of the Mammal Research Institute, PAS

description: Sorex araneus (Common shrew) from Zoological collection of the Mammal Research Institute, PAS. Collected 1976-09-10, in: Białowieża National Park, Poland. Material type: