Copperman, J.

Copperman, J., 1978. The impact of village water supplies in Botswana : a study of four villages : Mmathethe, Modipane, Sojwe, Tsamaya, Gaborone, Botswana: SIDA, Swedish International Development Cooperation Agency. Available at: https://fr.ircwash.org/sites/default/files/824-1837.pdf.