00353nam a2200121 a 450000500170000000800410001705000230005824500150008125000220009626000440011844000550016265000140021720140414132055.0100520s19uu    xx            00    eng d  aREF 540bC515 2003  aChemistry.  aNorth American ed  aMilwaukee, WI :bGareth Stevens,c2003.  aDiscovery Channel school science: physical science  aChemistry