00350nam a2200121Ia 450000500170000000800410001702000180005805000170007610000180009324500700011126000330018165000140021420251229084941.0251229s9999    xx            000 0 und d  a9780716731269  aQD 31.3 .B45  aBell,Jerry.A. 0aChemistryb A project of the American Chemical Society.  cA Bell  aNew Yorkb W.H.Freemanc2005  aChemistry