TY  - BOOK
AU  - Jeffries,Michael
AU  - Mills,Derek
TI  - Freshwater ecology: principles and applications  
U1  - 577.6 19
PY  - 1992///
CY  - New Delhi
PB  - CBS Publishers and Distributors Pvt. Ltd.
KW  - Freshwater
KW  - Spines
KW  - Ecology
N2  - Environment Management
ER  -