Handpumps testing and development : progress report on field and laboratory testing
著者
書誌事項
Handpumps testing and development : progress report on field and laboratory testing
(World Bank technical paper, no. 29)(UNDP project management report, no. 4)
World Bank, 1984
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注記
"Rural Water Supply Handpumps Project ; UNDP Project Management report no. 4" -- half t.p