Kurunegala (Region). Department of Health -LK

Ratmalana, L.K.National W., LK, K.(Region). & Eschborn, D.E.G.T.Z.-, 1988. VLOM pump OTC - system, Eschborn, Germany: German Agency for Technical Cooperation. Available at: https://www.ircwash.org/sites/default/files/232.2-88VL-7481.pdf.