Nhunhama, G.

Lovell, C.J. et al., 1998. An economic impact : productive waterpoints in dryland areas. , pp.p. 5-8 : 2 boxes, 1 fig., 2 photogr., 2 tab. Available at: https://es.ircwash.org/sites/default/files/Lovell-1998-Economic.pdf.