000			003130000a22001450004500
060			_a100
082			_a628.1 STE
100			_aStephens, J H
245			_aWater and waste
260			_aLondon, Macmillan
260			_c1967
300			_a112
650			_aWater/water supply/ sewage treatment
942			_cBK
999			_c356851 _d356851