00282nam a2200109Ia 4500008004100000082001000041100002400051245005200075250000900127260002800136300000800164240913s9999||||xx |||||||||||||| ||und||  aTUL/T  aG.D.Tuli & P.L.Soni 4aThe Language of Chemistry or Chemical Equations  aNULL  bAlpha BooksaNULLc2012  a106