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Walravens, H.: Stand der Arbeiten am SAZI (1990)
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- Bibliotheksdienst. 24(1990) H.11, S.1528-1530
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Walravens, H.: Stand der Arbeiten am SAZI (1990)
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- Bibliotheksdienst. 24(1990) H.11, S.1528-1530
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Walravens, H.: ¬... zu deutschen Zeitschriftengesamtkatalogen ... (genauer Titel nicht bekannt) (1995)
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- Zeitschriften in deutschen Bibliotheken: Bestand, Erwerbung, Erschließung, Benutzung. Hrsg. von der Staatsbibliothek zu Berlin - Preußischer Kulturbesitz unter der Leitung von H. Walravens
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Walravens, H.: ¬The International Standard Book Number and its applications (1995)
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Walravens, H.: Report on the International ISBN Advisory Panel Meeting, Stockholm, 23-24 October 1997 (1998)
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Walravens, H.: Serials librarianship in Germany : pt.1 (1995)
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Walravens, H.: ISMN: the International Standard Music Number : a new standard to rationalize the music trade (1995)
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Walravens, H.: New developments in standard numbering (1994)
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