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Up a level- Subjects (4082)
- 500 Science (4082)
- 500 Science (1196)
- 510 Mathematics (2752)
- 520 Astronomy (41)
- 530 Physics (5539)
- 540 Chemistry (4498)
- 570 Life sciences; biology (4082)
- 580 Plants (botany) (45)
- 590 Animals (zoology) (531)
- 500 Science (4082)
Number of items at this level: 0.