M.C. MUNDRA, B.P. SINGH, R.S. RlNWA, and S.C. GUPTA. “Crop Productivity, Returns and Soil Sustainability under Rice (Oryza Sativa) Wheat (Triticum Aestivum) Cropping System”. Indian Journal of Agronomy 48, no. 4 (October 10, 2001): 48_4 . Accessed June 24, 2026. https://pub.isa-india.in/index.php/ija/article/view/3089.