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Subclass QB
QB1-991 | Astronomy | ||
QB1-139 | General | ||
QB140-237 | Practical and spherical astronomy | ||
QB275-343 | Geodesy | ||
QB349-421 | Theoretical astronomy and celestial mechanics | ||
QB455-456 | Astrogeology | ||
QB460-466 | Astrophysics | ||
QB468-480 | Non optical methods of astronomy | ||
QB495-903 | Descriptive astronomy | ||
QB500.5-785 | Solar system | ||
QB799-903 | Stars | ||
QB980-991 | Cosmogony. Cosmology |