A guide to the study of fresh-water biology /
Needham, James G. 1868-1957.
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, c1962[reprinted 1975]. - 107 p. : ill. ; 23 cm.
0816263108
Freshwater insects
Freshwater biology.
595.7 / NEG 1975
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, c1962[reprinted 1975]. - 107 p. : ill. ; 23 cm.
0816263108
Freshwater insects
Freshwater biology.
595.7 / NEG 1975