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020 _a8172249837
_c142
040 _aMAIN
041 _aEnglish
082 _a660
_bROS
100 _aRosskam, Ellen and others
245 _aChemicals in the workplace
260 _aKolkata
_bJaico Publishing House
_c2002
300 _aix,48p.
650 _aChemical engineering
650 _aChemicals
650 _aEngineering
942 _cBK
999 _c24539
_d24539