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Kroeger, A.B.: Guide to the study and use of reference books : a manual for librarians, teachers and students (1904)
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Holzmann, M.; Bohatta, H.: Deutsches Pseudonymen-Lexikon : aus den Quellen bearbeitet (1906)
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Molitor, K.: Zu den Vorschlägen betreffend einheitlichen Zetteldruck I (1905)
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- Zentralblatt für Bibliothekswesen. 22(1905), S.129-135