TY  - BOOK
T1  - Biology of freshwater pollution
A1  - Mason, C. F.
LA  - English
PP  - New York
PB  - Longman
YR  - 1981
UL  - https://tuklas.up.edu.ph/Record/UP-8027390931313334259
OP  - 250
CN  - QH 137 M38 1981
KW  - Freshwater biology : Great Britain.
KW  - Water : Pollution : Great Britain.
ER  -