Biblio

N. Kibata, «Water and sanitation in developing countries : Internet based computing model for effective delivery of services». University of Durban-Westville, Durban, South Africa, p. xx , ca. 110 p. : fig., tabs., 2000.

N. Kibata, «Water and environmental sanitation for urban communities in developing countries : information server». University of Durban-Westville, Durban, South Africa, p. xvii, 101 p. : 6 fig., 21 tab., 1996.