TY  - GEN
AU  - 
AU  - Trivedi, P.R., ed.
AU  - Raj, Gurdeep, ed.
TI  - Encyclopaedia of environmental sciences
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep Publishing House
KW  - Environmental Sciences
N1  - Vol. 14 : Environmental management of fresh water ecology
ER  -