A study of the pollution and natural purification of the Illinois River
Subtitle: II. The plankton and related organisms
By: by W.C. Purdy
Series: Public health bulletin -- no. 198
Publisher: U.S. Govt. Print. Off
Published: 1930
Place of publication: Washington, D.C.
Language: eng
Number of pages: 212
Subjects: Plankton; Freshwater plankton
Notes: At head of title: U.S. Treasury Dept., Public Health Service.

Includes bibliographic references.