00325nam a2200145Ia 4500003000500000008004100005020000900046040000900055041001200064082002300076100001800099245003900117260000900156650001400165NDCL180829s9999||||ii |||||||||||||| ||eng||  a6181  aNDCL  aEnglish  a541.9 CDG216th ed  aCopper, D. G. 0aChemical periodicitycD. G. Copper  c1974  aChemistry