A revision of the lichen genus Sphaerophorus
By: by Karl E. Ohlsson.
Publisher: Michigan State University
Published: 1973
Language: eng
Number of pages: 271
Subjects: Lichens.
Notes: Thesis (Ph.D.)--Michigan State University.  Dept. of botany and Plant Pathology, 1973.

Bibliography: ¾. 192-197.
Table of contents: class: section