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020 _a9684510357
040 _cCIC-UMAD
041 _aeng
050 _aPE1115
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100 _aC. de Bravo, Bertha
_98076
245 0 _aTechnical english for business
250 _a1a
260 _aMéxico
_bMcGraw Hill
_c1970
300 _a232 p.
650 _aEnglish language
_98077
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