GUPTA, S. K., and K. S. LABANA. “NITROGEN HARVEST INDEX IN RAPESEED MUSTARD”. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING 49, no. 03 (November 25, 1989): 337–340. Accessed October 15, 2025. https://www.isgpb.org/journal/index.php/IJGPB/article/view/3187.