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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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