000 003030000a22001210004500
245 _aHand dug wells and their construction
100 _aWatt, S.B.
100 _aWood, W.E.
260 _aLondon
_bIntermediate Technology Publication
_c1979
080 _a628.112
_bW3
041 _aEN
942 _cBK
999 _c111087
_d111087