TY  - BOOK
AU  - Mason,C.F.
TI  - Biology of freshwater pollution
SN  - 0582061911 (pbk.)
PY  - 1991///
CY  - Harlow, Essex
PB  - Longman Scientific & Technical
KW  - Water
KW  - Pollution
KW  - Environmental aspects
KW  - Freshwater biology
KW  - Water quality bioassay
N1  - Includes indexes; Includes bibliographical references
ER  -