Philippines. Department of Health -PH, DOH

PH, D.O.H.Philippine, 1995. Implementing rules and regulations of chapter XVII - sewage collection and disposal, excreta disposal and drainage of the code on sanitation of the Philippines (P.D. 856), Manila, Philippines: Philippines, Department of Health, Environmental Health Service. Available at: https://pt.ircwash.org/sites/default/files/822-95-14761.pdf.