A guide to the study of fresh-water biology, with special reference to aquatic insects and other invertebrate animals and phyto-plankton, by James G. Needham and Paul R. Needham.
Needham, James G. (James George),
Needham, Paul R.
New York, Comstock Pub. Co.,
4th ed., rev. and enl.
QH96 .N38 1941