00375nam a22001097a 4500008004100000040005500041080001500096245006800111260006300179300000900242650001400251230616b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a621.65bL7  aHand pump maintenance in the context of community well projects  aLondon: bIntermediate Technology Publications Ltd, c1976  a38p.  aHand pump