A summary of technical and economic options
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書誌事項
A summary of technical and economic options
（Appropriate technology for water supply and sanitation, 1-A）
Transportation, Water, and Telecommunications Dept., World Bank, c1980
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"This report is a summarized version of the final report on appropriate technology for water supply and waste disposal in developing countries, a World Bank research project (pro 671-46) undertaken by ..."--abstract
"December 1980."