Kerala Agricultural University Central Library Search for 'au:"Singh, O P ."'

Reclamataion and management of waterlogged saline soils : national seminar proceedings April 5-8 ,1994

By K.V.G.K Rao. Karnal Central soil salinity research Institute 1995 . 454

By Singh,O P. New Delhi Concept Publishing Company 1998 . 459 8170226732

By Singh,O P. New Delhi Concept Publishing Company 1998 . 456 81 7022 673 2

New Delhi Regency Publications 2006 . xiv, 368p. 9788189233396

By Dargan, K S | Gupta, I C | singh, O P. Newdelhi, Oxford & IBH publishing co. pvt. ltd 1982 . 276

By Dargan, K S .. New Delhi : Oxford & IBH Publishing company , 1982 . 276 ; .