A guide to the study of fresh-water biology
Needham, James G.
A guide to the study of fresh-water biology [by] James G. Needham [and] Paul R. Needham. - 5th ed., rev. and enl. - San Francisco Holden-Day 1962. - 107 p. illus. 23 cm.
62020742 /L/r915
Freshwater biology
Aquatic insects.
QH96 / .N38 1962
591.929
A guide to the study of fresh-water biology [by] James G. Needham [and] Paul R. Needham. - 5th ed., rev. and enl. - San Francisco Holden-Day 1962. - 107 p. illus. 23 cm.
62020742 /L/r915
Freshwater biology
Aquatic insects.
QH96 / .N38 1962
591.929