TY  - BOOK
AU  - Das,S M  .
TI  - hand book of limnology and water pollution : with practical methodology / 
SN  - 8170030978
U1  - 551.48 
PY  - 1989///
CY  - New Delhi : 
PB  - South Asian Publishers , 
KW  - LIMNOLOGY
N1  - Includes index, bibliography
ER  -