Appropriate technology for water supply and sanitation :
Kalbermatten, John M.
Appropriate technology for water supply and sanitation : a summary of technical and economic options / by John M. Kalbermatten, DeAnne S. Julius, and Charles G. Gunnerson. - Washington, D.C. : Transportation, Water, and Telecommunications Dept., World Bank, c1980. - viii, 36 p. :
"December 1980."
SC971
Water-supply engineering.
628.168091724 / Ap
Appropriate technology for water supply and sanitation : a summary of technical and economic options / by John M. Kalbermatten, DeAnne S. Julius, and Charles G. Gunnerson. - Washington, D.C. : Transportation, Water, and Telecommunications Dept., World Bank, c1980. - viii, 36 p. :
"December 1980."
SC971
Water-supply engineering.
628.168091724 / Ap