CONFERENCE on ecology of fresh waters in sri lanka
PROCEEDINGS of the conference on ecology of fresh waters in sri lanka - Jaffna University of Jaffna 1993 - 48 p.
188852
Aquatic ecology
577.6 / CON
PROCEEDINGS of the conference on ecology of fresh waters in sri lanka - Jaffna University of Jaffna 1993 - 48 p.
188852
Aquatic ecology
577.6 / CON