1992
WHO -Geneva, CH, World Health Organization and Harare, Z. W. Blair Rese,
“Appropriate sanitation for very low income communities. Vol. I : Background reader for a workshop in Harare, Zimbabwe, November 1991”. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 36 p.: drawing, 1992.
N. Ministere NE,
“Guide national d'animation des programmes d'hydraulique villageoise”. Niger, Direction des Infrastructures Hydraulique, Niamey, Niger, p. 90 p.: drwngs., tab, 1992.
S. Cairncross,
“Sanitation and water supply : practical lessons from the decade”, vol. no. 9. World Bank, Washington, DC, USA, p. v, 63 p. : 5 boxes, fig., 1992.
N. L. S. A. W. A. - Ede, Oegstgeest, N. L. C. E. B. E. M. O. -, and Tamale, G. H. Tamale Arc,
“Village water reservoirs project Tamale, Ghana : half yearly progress report January - June 1992”. SAWA, Ede, The Netherlands, p. 35 p. : tab., fig., 1992.
1991
W. H. M. van Immerzeel,
“Field-irrigation training in the Peruvian Andes”,
Waterlines, an international journal of water, sanitation and waste, pp. p. 5-8: photogr., 1991.
P. Rahaman,
“Low-cost sanitation programmes : Orangi”, in
Infrastructure for low-income communities : proceedings of the 16th WEDC conference : Regional Centre for Urban and Environmental Studies (RCUES), Osmania University, Hyderabad, India, 27-31 August, 1990, 1991, pp. P. 145-148.
N. C. South Paci Noumea and International Centre for Ocean Development -Halifax, NS, CA,
“The principles of extension and communication skills : a manual for the fisheries extension officers in the Pacific islands”, vol. no. 30. South Pacific Commission, Noumea, New Caledonia, p. v, 92 p.: fig., ill., 1991.
del'Hydrauli Mines,
“Projet hydraulique villageoise et assainissement : quatrieme rapport annuel d'execution”. Mali, Ministere des Mines, de l'Hydraulique et de l'Energie, Direction Nationale de l'Hydraulique, Bamako, Mali, p. 30 p. : tab., 1991.
M. W. Blokland, Boot, M. T., and van der Wildt, C. D.,
“Rada Water Supply and Sanitation Project Republic of Yemen : report of the fourth monitoring mission, 9-15 June 1991”. Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. vii, 34 p., 1991.