Kumar, Subhash, A. K. Choubey, and Ravinder Singh. 2015. “Analysis of Yield Gaps in Black Gram (<I>Vigna mungo< I>) in District Bilaspur of Himachal Pradesh”. Himachal Journal of Agricultural Research 41 (1):49-54. https://www.hjar.org/index.php/hjar/article/view/110486.