Parkes , M.E., and M. E. Madata. “Trials With Trickle Irrigation Equipment at Morogoro Preliminary Report”. Tanzania Journal of Science 1, no. 2 (July 31, 1975): 15–24. Accessed May 7, 2024. https://tjs.udsm.ac.tz/index.php/tjs/article/view/101.