1997 SETHUNATHAN, Nambrattil (b. 1937) Ph.D.,F.A.Sc.,F.N.A.,F.N.A.A.S., Formerly Principal Scientist & Head, Division of Soil Science and Microbiology, Central Rice Research Institute, Cuttack; Res. Flat No. 103, Ushodaya Apts., S.V. Officers Colony, Ramakrishnapuram, Secunderabad – 500056; Tel: (040) 27790758(R); Email: ; Sp. Environmental Microbiology.