Classification
820 - English & Old English literatures
250
330 - Economics
209
320 - Political science
190
340 - Law
57
620 - Engineering & allied operations
52
350 - Public administration & military science
37
900 - History & geography
33
940 - History of Europe
33
610 - Medicine & health
23
520 - Astronomy & allied sciences
22
910 - Geography & travel
9
380 - Commerce, communications & transportation
8
810 - American literature in English
6
359 - Sea forces & warfare
5
700 - The arts; fine & decorative arts
5
300 - Social sciences
4
250 - Christian orders & local church
3
370 - Education
3
510 - Mathematics
3
576 - Genetics & evolution
3
658 - General management
3
327 - International relations
2
338 - Production
2
355 - Military science
2
360 - Social problems & services; associations
2
580 - Plants (Botany)
2
650 - Management & auxiliary services
2
909 - World history
2
970 - History of North America
2
010 - Bibliography
1
130 - Parapsychology & occultism
1
170 - Ethics
1
290 - Other religions
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
325 - International migration & colonization
1
349 - Law of specific jurisdictions & areas
1
500 - Natural sciences & mathematics
1
623 - Military & nautical engineering
1
630 - Agriculture & related technologies
1
670 - Manufacturing
1
710 - Civic & landscape art
1
780 - Music
1
790 - Recreational & performing arts
1
792 - Stage presentations
1
800 - Literature & rhetoric
1
870 - Italic literatures; Latin literature
1
920 - Biography, genealogy & insignia
1