A guide to the study of fresh-water biology /
Needham, James G.
A guide to the study of fresh-water biology / James G. Needham, Paul R. Needham - 5th ed. rev. and enl - San Francisco : Holden-Day, 1962 - 107 p. : ill. ; 23 cm.
0816263108
Freshwater biology
Insects, Aquatic
A guide to the study of fresh-water biology / James G. Needham, Paul R. Needham - 5th ed. rev. and enl - San Francisco : Holden-Day, 1962 - 107 p. : ill. ; 23 cm.
0816263108
Freshwater biology
Insects, Aquatic
