Biblio

F. Zewge, Emiru, T., Labhasetwar, P., Johnston, R., en Johnson, A., “Community and household water systems : risk assessment of fluorosis in rural villages of the Ethiopian Rift Valley”, SANDEC news, p. p. 25; 1 fig., 2012.

M. M. Datta, “Excess fluoride in drinking water in Ethiopia”, Maji : information bulletin on water resources activities in Africa, pp. p. 14-23 : 3 tab., 1996.

R. P. Ashley en Burley, M. J., “Controls on the occurrence of fluoride in groundwater in the Rift Valley of Ethiopia”, in Groundwater quality, 1995, pp. P. 45-54: 13 fig., 2 tab.