00349nam a22001097a 4500082000800000245004600008260003700054650001400091942000700105999001500112952011200127  a540  aChemistry Teachers Guide 11- Topics 13-19  aEnglandbPenguin books Ltdc1970  aChemistry  cBK  c1105d1105  0010708NFICaMLCampusbMLCampuscGENd2015-06-14l0o540 CHEp003560r2022-11-17 00:00:00w2015-06-14yBK