Items where Subject is ""
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- Dewey Decimal Classification (6394)
- 200 – Religion (3)
- 300 – Social sciences (901)
- 400 – Language (17)
- 500 – Science (36)
- 600 – Technology (3362)
- 700 - Arts & recreation (1000)
- 800 – Literature (3)
Number of items at this level: 0.