Work.
270 Religious History.
280 Christian Churches and Sects.
290 Non-Christian Religions.
300 Sociology 310 Statistics.
320 Political Science.
330 Political Economy.
340 Law.
350 Administration.
360 Associations and Institutions.
370 Education.
380 Commerce and Communication 390 Customs.Costumes.

Folk-lore.
400 Philology 410 Comparative.
420 English.
430 German.
440 French.
450 Italian.
460 Spanish.
470 Latin.
480 Greek.
490 Minor Languages.
500 Natural Science 510 Mathematics.
520 Astronomy.
530 Physics.
540 Chemistry.
550 Geology.
560 Paleontology.
570 Biology.
580 Botany.
590 Zoology.
600 Useful Arts 610 Medicine.
620 Engineering.
630 Agriculture.
640 Domestic Economy.
650 Communication and Commerce 660 Chemical Technology.
670 Manufactures.
680 Mechanic Trades.
690 Building.
700 Fine Arts 710 Landscape Gardening.
720 Architecture.
730 Sculpture.
740 Drawing, Design, Decoration.
750 Painting.
760 Engraving.
770 Photography.
780 Music.
790 Amusements.
800 Literature 810 American.
820 English.
830 German.
840 French.
850 Italian.
860 Spanish.
870 Latin.
880 Greek.
890 Minor Languages.
900 History 910 Geography and Description.
920 Biography.
930 Ancient History.
940 Europe.

} 950 Asia.

} 960 Africa.

} Modern 970 North America.