Biblio

K. Danert, “A brief history of hand drilled wells in Niger : only the beginning”. Water and Sanitation Program - African Region, Nairobi, Kenya, p. 15 p. : 1 fig, 1 map, 5 boxes, 1 tab., photogr., 2006.

K. Danert, “A brief history of hand-drilled wells in Niger”, Waterlines, an international journal of water, sanitation and waste, pp. p. 4-6 : 2 boxes, 4 photogr., 2006.

B. C. Mal and Mishra, A. P., “Low-cost tubewells for developing countries”, International journal for development technology, pp. p. 197-203, 1986.

A. Ohlsson, “Well-drilling rigs in rural Africa : a comparative study”. Linkoping University, Institute of Technology, Linkoping, Sweden, p. 87 p.: fig., tab., 1986.

E. de Reynies, “Forages d'eau en tres petit diametre dans le socle en Afrique”, Le Courrier Johnson, pp. p. 701-705, 1983.

J. Tolman, “Water well driller's beginning training manual : a complete guidebook for the beginning well driller on design, construction and maintenance of water wells and pump installation”. National Water Well Association, Columbus, OH, USA, p. 84 p., 1979.