Dukabain, O., Singga, S., & Ratu, A. (2018). Efficiency Comparison of Conventional Septic Tank and Septic Tank Modification In Reduce Level Of Bod, TSS coliform and Household Waste. Proceeding 1st. International Conference Health Polytechnic of Kupang, 658-662. Retrieved from http://proceeding.poltekeskupang.ac.id/index.php/ichpk/article/view/118