A.K. JHA et al. 2001. Effect of tillage and sowing methods on productivity, economics and energetics of rice (Oryza sativa)-wheat (Triticum aestivam) cropping system. Indian Journal of Agronomy. 56, 1 (Oct. 2001), 35–40. DOI:https://doi.org/10.59797/ija.v56i1.4666.