000			00553nam a2200217Ia 4500
005			20260808125409.0
008			260808s9999||||xx |||||||||||||| ||und||
020			_a92-4-154037-0
035			_a3742
041			_aENG
082			_a614.7
100			_aHuisman, L.
245		0	_aSlow sand filtration
260			_aGeneva _bWorld Health Oraganization _c1974
300			_a122
500			_aGift
505			_aWHO, public health, epidemiology, global health
650			_aWHO _bPublic health -- Epidemiology
700			_aWood, W. E.
942			_cBK
999			_c3741 _d3741