TY  - BOOK
AU  - Mason,C.F.
TI  - Biology of freshwater pollution
SN  - 0582455960 (pbk.)
PY  - 1981///
CY  - London
PB  - Longman
KW  - Water
KW  - Pollution
KW  - Environmental aspects
KW  - Freshwater biology
N1  - Includes index; Includes bibliographical references
ER  -