1.
M.K. SINGH, U.N. VERMA, S.K. PAL, R. THAKUR. Efficacy of slow release nitrogen-fertilizers to rice (Oryza sativa) and their residual effect on wheat (Triticum aestivum). IJA. 2001;44(1):44_1 . doi:10.59797/ija.v44i1.3472