-
Principles underlying subject heading languages (SHLs) (1999)
10.09
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- Classification
- 025.4/9 / dc22
- Ddc
- 025.4/9 / dc22
-
Sears' list of subject headings (2007)
10.09
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- Classification
- 025.4/9 / dc22
- Ddc
- 025.4/9 / dc22
-
Sears' list of subject headings (2010)
10.09
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- Classification
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- Ddc
- 025.4/9 / dc22