000			00304nam a2200121Ia 4500
008			140317s9999 xx 000 0 und d
082			_a628
100			_aRich,Linvil G.
245			_aUnit processes of sanitary engineering.
260			_aN.Y. _bJohn wiley , Sons. _c1963
300			_a190
942			_2ddc _cBK
999			_c4945 _d4945