KarmaKar, P G, and P S Bhatnagar. “Performance of Soybean (Glycine Max) Varieties at Different Dates of Sowing in Malwa Plateau of Madhya Pradesh”. The Indian Journal of Agricultural Sciences, vol. 65, no. 2, May 2012, https://epubs.icar.org.in/index.php/IJAgS/article/view/18194.