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Bases de datos bibliográficos Pascal y Francis

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Pascal Classification Scheme

001 Exact sciences and technology.
- 001A Sciences and techniques of general use.
- 001B Physics
- 001C Chemistry.
- 001D Applied sciences.
- 001E Earth, ocean, space.
  - 001E01 Earth sciences.
  - 001E02 External geophysics.
  - 001E03 Astronomy.
    - 001E03A Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations.
    - 001E03B Solar System.
    - 001E03C Stars.
    - 001E03D Stellar systems. Galactic and extragalactic objects and systems. The Universe.
      - 001E03D10 Stellar dynamics and kinematics.
      - 001E03D20 Stellar clusters and associations.
      - 001E03D35 Characteristics and properties of the Milky Way.
      - 001E03D38 Interstellar medium (ISM) and nebulae in Milky Way.
      - 001E03D52 Normal galaxies. Extragalactic objects and systems (by type).
      - 001E03D54 Quasars. Active or peculiar galaxies, objects, and systems.
      - 001E03D56 Local Group. Magellanic clouds.
        
        001E03D56E Elliptical galaxies.
        
        001E03D56N Spiral galaxies (M31 and 001M33).
        
        001E03D56S Magellanic clouds and other irregular galaxies.
        
        001E03D56T Magellanic stream.
        
        001E03D56W Dwarf galaxies (elliptical, irregular, and spheroidal).
      - 001E03D58 Interstellar medium (ISM) and nebulae in external galaxies.
      - 001E03D62 Characteristics and properties of external galaxies and extragalactic objects.
      - 001E03D65 Galaxy groups, clusters, and superclusters. Large-scale structure of the Universe.
      - 001E03D70 Unidentified sources and radiation outside the Solar System.
      - 001E03D80 Cosmology.
      - 001E03D90 Other topics on stellar systems; galactic and extragalactic objects and systems; the Universe.
    - 001E03E Extraterrestrial life and intelligence.
002 Biological and medical sciences.

Francis Classification Scheme