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Biblio

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1983
H. L. Jennings, « Testing training manuals for rainwater roof catchment and spring capping systems in workshops for Togolese development agents », vol. no. 87. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. i, 58 p.: fig., 1983.
1981
R. Burrowes et Ansell, C., « Communicating hygiene/sanitation messages to villagers : an experiment in Wadi Ayyan ». Save the Children, Sana'a, Yemen, p. iii, 55 p.: fig., photogr., 1981.
1976
W. E. Wood et Watt, S. B., Hand dug wells and their construction. London, UK: IT Publications, 1976, p. 234 p.: photogr., ill.
1975
G. B. Institutio London, Maintenance of water quality : proceedings of symposium held in Cambridge, England, from 9th to 11th September 1975. London, UK: Institution of Water Engineers and Scientists (IWES), 1975, p. 142 p. : fig., tab.

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