life history of the dusky darter, Percina sciera, in the Embarras River, Illinois
By: Lawrence M. Page, Philip W. Smith.
Contributors: Smith, Philip W. 1921-; Illinois. Natural History Survey Division
Series: Biological notes -- no. 69
Publisher: State of Illinois, Dept. of Registration and Education, Natural History Survey Division
Published: 1970
Place of publication: Urbana, Ill
Language: eng
Number of pages: 15
Subjects: Percina; Darters (Fishes) -- Illinois -- Embarras River
Notes: Cover title.

"September 1970."

Bibliography: p. 14-15.