Items where Subject is "520 ASTRONOMY"

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Dewey Subject Headings (5633)
- 500 NATURAL SCIENCES & MATHEMATICS (809)
  - 520 ASTRONOMY (7)
    - 520 Astronomy & allied sciences (1)
    - 525 Earth (Astronomical geography) (1)
    - 527 Celestial navigation (1)
    - 529 Chronology (4)

Number of items at this level: 0.

This list was generated on Sun Jul 6 06:03:07 2025 UTC.