TY  - BOOK
AU  - Ashok Kumar
TI  - Aquatic ecosystem
SN  - 9789350560679
U1  - 577.6 ASH 
PY  - 2012///
CY  - New Delhi
PB  - Discovery Publishing House
KW  - Ecology
KW  - Ecohydrology
KW  - Ecosystems
ER  -