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Frias, J.A.: ¬La estructura conceptual del registro bibliografico : una revision (1996)
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Leazer, G.H.: ¬A conceptual schema for the control of bibliographic works (1994)
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Campbell, D.G.; Mayhew, A.: ¬A phylogenetic approach to bibliographic families and relationships (2017)
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Niu, J.: Hierarchical relationships in the bibliographic universe (2013)
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Ito, J.: Bibliographic structure : a frame of reference for bibliographic relationships (1994)
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