00470nam a2200181u  450000500170000000700030001700800410002002000180006110000270007924500110010626000420011730000220015944000190018150000090020065000220020965000170023165000400024820190501181358.0ta060105|||||||||||||||||||||||||||||eng|u  a0-7172-7572-81 aKnapp, Brian, BSc, Phd10aSulfur0 aDanbury, CTbGrolier Educatinalc1996  a56 p., incl index  aElementsvV.13  acard 4aChemical elements 4aPeriodic law 4aChemistry, Physical and theoretical