SHARMA, S N, R PRASAD, and R K SINGH. 2013. “Influence of Summer Legumes in Rice (Oryza Sativa)-Wheat (Triticum Aestivum) Cropping System on Soil Fertility”. The Indian Journal of Agricultural Sciences 70 (4). https://epubs.icar.org.in/index.php/IJAgS/article/view/28188.