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Dahlberg, I.: Major developments in classification (1977)
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- Source
- Advances in librarianship. 7(1977), S.41-103
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Dahlberg, I.: Einheitsklassifikation (1979)
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- Pages
- S.31-49
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Dahlberg, I.: Classification theory, yesterday and today (1976)
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- Source
- International classification. 3(1976), S.85-90