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    - Electronic Structure 57
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- Biology
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    - Nematoda 17
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    - Anatomy 30
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    - Reproduction 40
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  - Molecular Biology
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    - Bio Enzymes 3
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    - Biochemical Vitamins 36
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- Earth and Space Science
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    - Soil 8
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    - Geological Time 23
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  - Meteorology
    - Metrological Atmosphere 12
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  - Oceanography
    - Ocean Basins 21
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  - Soil Science
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    - Soil Physics 1
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- Astronomy
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  - Cosmology
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    - Large Scale 1
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    - Planet Types 6
    - Atmospheres 1
  - Astrobiology
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    - Space Missions 5
  - Astronomical Instruments
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  - Space Exploration and Missions
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    - Lunar Missions 6
    - Mars Missions 2
    - Space Stations 3
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  - Celestial Mechanics and Orbits
    - Orbital Motion 7
    - Kepler Laws 3
    - Newton Laws 60
    - Orbital Gravity 1
    - Eclipses 7
    - Retrograde Motion 3
    - Perturbations 5
    - Orbital Resonance 5

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