Singh, A.P.Tripathi, R.S.Mittra, B.N.2012-04-102012-04-101999Tropical Agricultural Research and Extension2(2)pp.83-86https://dl.nsf.gov.lk/handle/1/8013Integrated nitrogen management in rainfed rice {Oryza sativa) - linseed (Linum usitatissimum) cropping systemArticle