TY  - BOOK
AU  - Mason,C.F.
TI  - Biology of freshwater pollution
SN  - 0582061911
AV  - QH545.W3 M37 1991
U1  - 628.1/68/09169 
PY  - 1991///
CY  - Harlow, Essex, England
PB  - Longman Scientific & Technical
KW  - Water
KW  - Pollution
KW  - Freshwater biology
ER  -