Some unusual natural areas in Ilinois and a few of their plants
By: Robert A. Evers.
Contributors: Illinois. Natural History Survey Division
Series: Biological notes -- no. 50
Publisher: State of  Illinois, Dept. of Registration and Education, Natural History Survey Division
Published: 1963
Place of publication: Urbana, Ill
Language: eng
Number of pages: 32
Subjects: Botany -- Illinois; Illinois -- Description and travel
Notes: Cover title.

Includes bibliographical references (p. 30).