N. Bosma,
“Communication approaches in rural water supply programs”, vol. no. 32. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. 72, 34 p.: fig., 1990.
F. Rosensweig, Stanbury, P., en Grimm, C.,
“Development of the national strategy to create and monitor water user associations in Tunisia : action plan”, vol. no. 26. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ix, 88 p., 1990.
F. Rosensweig, Stanbury, P., en Grimm, C.,
“Developpement de la strategie nationale pour la creation et le suivi des associations d'interet collectif en Tunesie : plan d'action”, vol. no. 26. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ix, 87 p., 1990.