Biblio

R. Carter, Belete, E., Berhe, E., Defere, E., Horecha, D., y Negussie, Y., «Reducing the costs of borehole drilling in Africa : insights from Ethiopia», Waterlines, an international journal of water, sanitation and waste, pp. p. 7-9 : 1 box, 4 photogr., 1 tab., 2006.

R. Carter, Howsam, P., Gardner, S., y Tyrrel, S., «Biological removal of iron from well-handpump water supplies», Waterlines, an international journal of water, sanitation and waste, pp. p. 29-31 : 2 fig., 3 photogr., 1998.