00402nam a22001457a 4500003000400000005001700004008004100021020001800062040002300080050001500103082001800118100002000136245006100156260003900217OSt20211014112101.0211014b        |||||||| |||| 00| 0 eng d  a1-85339-346-0  cHawassa University  a628.15/FRA  22a628.15/FRA  aFraenkel Peter   aWater-pumping devices a handbook for users and choosers   aUKbIntermediate Technology c1997