Book-bot.com - A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a Library by Dewey, Melvil, 1851-1931

A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a Library by Melvil Dewey
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511 Arithmetic.
512 Algebra.
513 Geometry.
514 Trigonometry.
515 Conic sections.
516 Analytical geometry.
517 Calculus.
518 Quaternions.
519 Probabilities.

=520 Astronomy.=
521 Theoretical.
522 Practical.
523 Descriptive.
524 Maps.
525 Observations.
526 Figure of the earth.
527 Navigation.
528 Almanacs.
529 Chronology.

=530 Physics.=
531 Mechanics.
532 Hydrostatics.
533 Pneumatics.
534 Acoustics.
535 Optics.
536 Heat.
537 Electricity.
538 Magnetism.