Time (chronology), time systems & standards

Kategorie

• Knihy po anglicky
  • Mathematics & science
    • Mathematics
    • Science: general issues
    • Astronomy, space & time
      • Theoretical & mathematical astronomy
      • Astronomical observation: observatories, equipment & methods
      • Cosmology & the universe
      • Galaxies & stars
      • Solar system: the Sun & planets
      • Astronomical charts & atlases
      • Time (chronology), time systems & standards
    • Physics
    • Chemistry
    • Biology, life sciences

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