1972 RAMAKRISHNAN, P.S. (b. 1936) Ph.D.,F.N.A.,F.A.Sc.,F.N.A.A.S.,F.T.W.A.S., INSA Honorary Scientist, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi – 110067; Res. I-21, South Ciy Phase I, Gurgaon – 122001; Tel: 011-26704326(O), (0124) 4085970(R), 09958514140(M); Fax: 26741262; Email: ; ; Sp. Ecology/Sustainable Development.