Planning of communication support (information, motivation -and education) in sanitation projects and programs / by Hel-i Perrett.
Perrett, Heli.
Planning of communication support (information, motivation -and education) in sanitation projects and programs / by Hel-i Perrett. - Washington. : World Bank - 31 p. - Technical note; no. 2 .
Planning of communication support (information, motivation -and education) in sanitation projects and programs / by Hel-i Perrett. - Washington. : World Bank - 31 p. - Technical note; no. 2 .