00276pam a2200121 a 4500020000500000041000800005082001300013100001400026245005300040250001000093260003800103300001300141  c  aeng  a540bBRO  aBrown T .  aChemistry The Genral Science hTextual Documents  a1992.  aNew DelhibPrentice Hall Of India  a991 pg .