Developing and using audio-visual materials in water supply and sanitation programs

Opis bibliograficzny
1. autor:	Karlin, Barry
Korporacja:	Water and Sanitation for Health Project (U.S.)
Kolejni autorzy:	Isely, Raymond B.
Format:	Książka
Język:	angielski
Wydane:	Arlington, Va. WASH 1984.
Seria:	WASH technical report no.30
Hasła przedmiotowe:	Water-supply > Audio-visual aids. Sanitation > Audio-visual aids. Water-supply > Instruction and study. Sanitation > Instruction and study. Water Supply > Programmed instruction. Sanitation > Programmed instruction.