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Hehl, H.: Kostenlose bibliographische Datenbanken im Internet (1998)
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- Bibliotheksdienst. 32(1998) H.3, S.526-541
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Hehl, H.: ¬Das Internet als Quelle bibliographischer Ermittlung und elektronischer Beschaffung (1997)
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- Bibliotheksdienst. 31(1997) H.7, S.1314-1324
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Hehl, H.: ¬Das Multisuchsystem E-Connect : Anwendungen von Javaskript für die Literatursuche und Literaturbeschaffung im Internet (1999)
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- Bibliotheksdienst. 33(1999) H.9, S.1526-1545