“Determination of Pit Latrine Volume from an Anaerobic Digestion Model: Perceptive of Nightsoil in Tropical Condition”. The Journal of Building and Land Development 17, no. 1 & 2 (August 27, 2018): 33–48. Accessed July 12, 2025. http://journals.aru.ac.tz/index.php/JBLD/article/view/196.