TY  - BOOK
AU  - Santhanam, R.
AU  - Velayuthan, P.
AU  - Jegatheesan, G
TI  - A manual of fresh water ecology: an aspect of fishery environment 
SN  - 8170350549
AV  - QH541.5.F7 .S2
PY  - 1989///
CY  - Delhi
PB  - Daya Publishing House
KW  - Ecology
N1  - includes index
ER  -