TY  - BOOK
AU  - MAITLAND,PETER S.
TI  - BIOLOGY OF FRESH WATER / 
T2  - TERTIARY LEVEL BIOLOGY
SN  - 0412028417
U1  - 574.909 
PY  - 1994///
CY  - Ø§ÙØ¬ÙØªØ±Ø§ : 
PB  - BLACKIE ACADEMIC & PROFESSIONAL Ø 
KW  - FRESHWATER BIOLOGY
KW  - BIOLOGY
KW  - WATER
KW  - WATER POLLUTION
ER  -