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090 _aR-2929
100 0 0 _aShores, Louis.
_9105736
245 _aIntroduction
_b: the practice of reference
500 _aSobretiro de: Shores, Louis. basic reference sources: an introduction to materias and methods. Chicago : ALA, 1954 pp.1-22
590 _aBATCH-UPD
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590 _aCONVERSION
_b10
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650 1 4 _aServicio de consulta (Bibliotecas)
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942 _cREIMP
949 _aR-2929
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