Abstracts.
Contributors: University of Arizona
Publisher: University of Arizona
Published: 1962
Place of publication: Tucson
Language: eng
Subjects: Pollen, Fossil -- Abstracts; Spores (Botany), Fossil -- Abstracts
Notes: Sponsoring organizations: University of Arizona: Geochronology Laboratories, Dept. of Botany, Dept. of Geology, and others.