Hilgenberg, O.C.: ¬Der flächenhafte Realkatalog mit Dezimalklassifikation und Schlagwortregister (1953)
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- Source
- Zentralblatt für Bibliothekswesen. 67(1953), S.254-287,342-357
Hilgenberg, O.C.: Zur Entstehung der Dezimalklassifikation (1952)
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- Source
- Zentralblatt für Bibliothekswesen. 66(1952), S.259-264
