TY  - BOOK
AU  - Needham, James. G.
AU  - Needham, Paul. R.
TI  - A guide to the study of fresh water biology
SN  - 0816263108
U1  - 577.6 
PY  - 1962///
CY  - San Francisco
PB  - Holden day
KW  - Freshwater biology
KW  - Aquatic insects
KW  - Freshwater organisms
ER  -