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Hahn, G.: Sacherschließung durch Schlagwortkataloge : theoretische und praktische Fragen, dargestellt am Beispiel der Bibliotheken der Industrie- und Handelskammern (1983)
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- Mitteilungen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. 1983, H.54, S.1-28
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Hahn, G.: ¬Der Zusammenhang von Systemzweck, Sachgebiet, inhaltlicher Literaturauswertung und Katalog in der Bibliothek des Deutschen Bundestages (1980)
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- Bibliotheksarbeit für Parlamente und Behörden: Festschrift zum 25jährigen Bestehen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. Hrsg. von W. Dietz u.a
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Hahn, G.: ¬Die Kataloge der Reichstagsbibliothek zu Berlin und der Aufbau des Katalogsystems der Bibliothek des Deutschen Bundestages (1986)
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- Parlament und Bibliothek = Parliament and library: internationale Festschrift für Wolfgang Dietz zum 65. Geburtstag. Hrsg. von G. Hahn u.a
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Hahn, G.: ¬Die 'vorwiegend formalen' Kataloge der Bibliothek des Deutschen Bundestages (1980)
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- Mitteilungen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. 1980, Nr.48, S.7-30
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Hahn, G.: ¬Die Bibliothek des Wissenschaftlichen Dienstes des US-Kongresses : Eine Bibliothek in der Library of Congress (1985)
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- Mitteilungen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. 1985, Nr.58, S.19-59
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Hahn, G.: ¬Die Klassifikation der Rechtsliteratur in der Bibliothek des Deutschen Bundestages (1981)
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- Mitteilungen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. 1981, Nr.50, S.13-19
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Hahn, G.: Keine Bibliothek wie jede andere : Anmerkungen zur Sacherschließung der Bibliothek des Deutschen Bundestages - vom systematischen Karten-Katalog zum Online-Katalog (1987)
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- Mitteilungen der Arbeitsgemeinschaft der Parlaments- und Behördenbibliotheken. 1987, Nr.62, S.1-40
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Hahn, G.: ¬Die historischen Komponenten des Katalogsystems der Bibliothek des Deutschen Bundestages (1987)
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- Bibliothek: Forschung und Praxis. 11(1987), S.49-72
