TY  - BOOK
AU  - Santhanam, R.
ED  - Velayutham, P.
ED  - Jegatheesan, G.
TI  - A manual of freshwater ecology
SN  - 8170350549
U1  - 574.52632 
PY  - 1989///
CY  - Delhi
PB  - Daya Publishing House
ER  -