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Dewey, M.: ¬A classification and subject index for cataloguing and arranging the books and pamphlets of a library (1876)
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Morrow, B.: WILSONDISC's Reader's Guide Abstract (1988)
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Clack, D.H.: Subject access to African American studies resources in online catalogs : issues and answers (1994)
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Gödert, W.: Subject headings for mathematical literature (1980)
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Gödert, W.: Verbale Inhaltserschließung : Ein Übersichtsartikel als kommentierter Literaturbericht (1991)
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