A summary of technical and economic options.
Kalbermatten J M, Julius D S, Gunnerson C.G.
A summary of technical and economic options. - 36p. - (Appropriate technology for water supply and sanitation ; v. 1-A) .
Water supply--Economics
Sanitation--Economics
Technology, appropriate
A summary of technical and economic options. - 36p. - (Appropriate technology for water supply and sanitation ; v. 1-A) .
Water supply--Economics
Sanitation--Economics
Technology, appropriate