00274nam a2200121Ia 450000500170000000800410001704100080005808200150006610000180008124500260009926000180012530000090014320260720174735.0260720s1970    xx            000 0 und d  aeng  a372.8 STEA  aStern,Arthurc  aAir-pollution, 2nd ed  aNewyorkc1970  a866p