USAID -Washington, DC, US. Bureau for Africa

USAID -Washington, DC, US. Bureau for Africa, 1985. Improved water-pumping/water-lifting in Africa planning meeting : August 29, 1985, Washington, DC, USA: USAID, Bureau for Africa. Available at: https://fr.ircwash.org/sites/default/files/230-85IM-5922.pdf.