000 00285nam a2200109Ia 4500
008 130521s9999 xx 000 0 und d
020 _a88964389
100 _a"Yau, Goh Sing"
245 _aLaboratory and Field Testing of Handpumps /
260 _a"Ottawa, Canada :"
650 _aHAND PUMPS
999 _c4865
_d4865