Nyangeri, E.E.N.

Nyangeri, E.E.N., 1986. Rehabilitation of hand-dug wells and protected springs in Kisii, Kenya, (Publications / Tampere University of Technology no. 29) Tampere, Finland: Tampere University of Technology. Available at: https://es.ircwash.org/sites/default/files/212.5-2335.pdf.