Biblio

D. O. H. Philippine PH, “EASAN 2010 : East Asia ministerial conference on sanitation and hygiene : presentations”. Philippines, Department of Health, DOH, Manila, Philippines, p. Various papers, 2010.

D. O. H. Philippine PH, “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)”. Philippines, Department of Health, Environmental Health Service, Manila, Philippines, p. 22 p. : 2 boxes, 1 tab., 1995.