500 Science
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- 500 Science (11259)
- 500 Science (591)
- 510 Mathematics (1862)
- 520 Astronomy (3)
- 530 Physics (2249)
- 540 Chemistry (2350)
- 570 Life sciences; biology (2631)
- 580 Plants (botany) (35)
- 590 Animals (zoology) (504)
- 500 Science (11259)
Number of items at this level: 0.