A guide to the study of fresh-water biology /

Needham, James G. 1868-1957.

A guide to the study of fresh-water biology / James G. Needham [and] Paul R. Needham. - 5th ed., rev. and enl. - San Francisco, Holden-Day, c1962. - 107 p. illus. 23 cm.

62020742


Freshwater organisms--Identification.
Freshwater organisms--North America--Identification.
Freshwater organisms--Collection and preservation.

QH96 / .N4 1962

591.929