GUL, I. (2010) “Effect of Different Previous Crops and Nitrogen Rate on Grain Sorghum (Sorghum bicolorL. Moench)”, Asian Journal of Chemistry, 20(4), pp. 2914–2922. Available at: https://asianpubs.org/index.php/ajchem/article/view/12661 (Accessed: 23 July 2024).