TY - BOOK AU - Karlin, Barry AU - Isely, Raymond B. ED - Agency for International Development TI - Developing and using audio-visual materials in water supply and sanitation programs / prepared by Barry Karlin and Raymond B. Isely U1 - R 16.52 KAR -4654 CY - Washington, D.C., 1984. KW - Sanitation KW - Water supply - Health aspects KW - HEA ER -