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082 _a547 BE-O
100 _aBeyer
110 _aWeltes
_940247
245 0 _aOrganic chemistry
_cBeyer
260 _aNew Delhi
_bUBS
_c1997
300 _axx,495p
650 _aOrganic chemistry
_940248
942 _cBK
999 _c48932
_d48932