J. Pickford,
Developing world water [1987]. London, UK: Grosvenor Press, 1987, p. 588 p.: fig., tab.
UNDTCD -New York, NY, US,
“Follow-up to the Mar del Plata action plan : report of the meeting”. United Nations Department of Technical Co-operation for Development, New York, NY, USA, p. 47 p., 1987.
R. Andersson, Lium, T., Msuya, M., and Skofteland, E.,
“Implementation of rural water supply and sanitation : seminar held in Arusha, Tanzania, 3-7 March 1986 : proceedings”. Norwegian National Committee for Hydrology (NHK), Oslo, Norway, p. 433 p.: fig., tab., 1987.
PAHO -Washington, DC, US,
“International Drinking Water Supply and Sanitation Decade : regional progress report”, vol. no. 6. Pan American Health Organization (PAHO), Washington, DC, USA, p. xv, 30 p.: fig., tab., 1987.
A. Sendama and Mutiri, P. N.,
“Rapport de synthese : campagne d'indentification des besoins en eau en Afrique (Cameroun, Kenya, Niger, Rwanda, Zimbabwe)”. Environment Liaison Centre International, Nairobi, Kenya, p. 128 p.: fig., tab., 1987.