FEROZ BABAZOI, et al. “Effect of Crop Establishment Methods and Phosphorus Levels on Productivity and Profitability of Black Eyed Bean (Vigna Unguiculata) in Semi-Arid Region of Afghanistan”. Indian Journal of Agronomy, vol. 64, no. 1, Oct. 2001, pp. 142-5, https://doi.org/10.59797/ija.v64i1.5247.