Biblio

S. Africa. Na ZA, «Sanitation for a healthy nation : sanitation technology options». South Africa, Department of Water Affairs and Forestry, Pretoria, South Africa, p. 10 p. : techn. drwng, 2002.

S. Africa. Na ZA, «National sanitation policy [white paper on sanitation South Africa]». National Sanitation Task Team, Pretoria, South Africa, p. vii, 29 p. : boxes, 1996.