Kumar, Vinod, A.K. Chopra, and Ajendra Kumar. “A Review on Sewage Sludge (Biosolids) a Resource for Sustainable Agriculture”. Archives of Agriculture and Environmental Science 2, no. 4 (December 1, 2017): 340–347. Accessed March 10, 2026. https://journals.aesacademy.org/index.php/aaes/article/view/02-04-017.