Items where Subject is ""
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- Dewey Decimal Classification (8003)
- 200 – Religion (8)
- 300 – Social sciences (990)
- 400 – Language (20)
- 500 – Science (41)
- 600 – Technology (4243)
- 700 – Arts & recreation (1323)
- 800 – Literature (3)
Number of items at this level: 0.
