Page:Library of Congress Classification Outline.djvu/240

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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