000			00315nam a2200109Ia 4500
008			200302s9999 xx 000 0 und d
100			_aW.Roce Apha & Other
245			_aStandard Methods For the Examination of Water and Wastewater 22nd ed
260			_bAmerican Public Association
260			_c2012
300			_a10-174
999			_c3603 _d3603