K. Wehrle, Hall, D., and Christen, J.,
“Monitoring and evaluation of water and sanitation projects : concepts and tools, workshop experiences : report on the AGUASAN Regional Workshop, Mohale's Hoek, Lesotho, June 1993”. SKAT (Swiss Centre for Development Cooperation in Technology and Management), St. Gallen, Switzerland, p. 116 p. : fig., photogr., tab., 1993.