NOORI, G.H. et al. 2019. Influence of varying nitrogen levels on crop productivity, profitability and resource-use efficiency in Bt-cotton (Gossypium hirsutum) in semi-arid region of Afghanistan. The Indian Journal of Agricultural Sciences. 89, 4 (Apr. 2019), 745–748. DOI:https://doi.org/10.56093/ijas.v89i4.88877.