S.D. Sharma, K.G. Prasad, G.H. Khan, and V.K. Singh. “GYPSUM AND ORGANIC RESIDUE FOR AFFORESTATION OF SODIC SOILS”. Journal of Tropical Forest Science (JTFS) 7, no. 4 (June 17, 1995): 580–590. Accessed July 3, 2024. https://jtfs.frim.gov.my/jtfs/article/view/1854.