TY  - BOOK
AU  - Mason,C.F.
TI  - Biology of freshwater pollution
SN  - 0130906395 (hbk)
U1  - 628.1/68 
PY  - 2002///
CY  - Harlow, England, New York
PB  - Prentice Hall
KW  - Water
KW  - Freshwater biology
ER  -