00521ca0 a2200229ua 4500001000500000005001700005007000300022008004100025020000800066040000900074041001400083082001300097100002900110245003300139250001300172260003600185300001900221365000800240504000900248541002000257650001400277247120180503180155.0ta160921s2002    ii     g     b000 u eng u  c$31  aMAIN1 aenghNULL  a540bCha  aChang, Raymond .eAuthor  aChemistry / cRaymond Chang.  a7th /b.  aLondon :bMcGraw Hill , c2002.  aNULL ; cNULL.  a$31  aNULL  e19050     h$31  aChemistry