TY  - BOOK
AU  - 
TI  - Ecology of fresh water
SN  - 0674224477
U1  - 577.6 BRO/E 
PY  - 1971///
CY  - . - Cambridge, Mass.
PB  -  : Harvard University Press
KW  - Freshwater ecology
N1  - Bibliography: p. [119]-121
ER  -