Landscape ecological analysis of the Karuvannur River basin with special reference to riverine and irrigated water quality(at Kerala state Pollution Control Board, Trivandrum)

od Sreekandan Nair, P
Izdano 2000

Status of air in selected areas of Kottayam District

od Smitha Sukumaran, S, Sreekandan Nair, P, Vrinda, A
Izdano 1998