Classification
330 - Economics
83
320 - Political science
31
900 - History & geography
20
327 - International relations
18
300 - Social sciences
16
304 - Factors affecting social behavior
15
333 - Economics of land & energy
14
610 - Medicine & health
11
340 - Law
8
341 - Law of nations
8
551 - Geology, hydrology & meteorology
8
363 - Other social problems & services
7
939 - Other parts of ancient world to ca. 640
6
306 - Culture & institutions
5
650 - Management & auxiliary services
5
930 - History of ancient world to ca. 499
5
380 - Commerce, communications & transportation
4
576 - Genetics & evolution
4
624 - Civil engineering
4
630 - Agriculture & related technologies
4
658 - General management
4
909 - World history
4
910 - Geography & travel
4
140 - Specific philosophical schools
3
338 - Production
3
345 - Criminal law
3
355 - Military science
3
370 - Education
3
550 - Earth sciences
3
961 - Tunisia & Libya
3
302 - Social interaction
2
323 - Civil & political rights
2
378 - Higher education
2
570 - Life sciences; biology
2
616 - Diseases
2
620 - Engineering & allied operations
2
621 - Applied physics
2
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
2
870 - Italic literatures; Latin literature
2
000 - Computer science, information & general works
1
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
1
150 - Psychology
1
322 - Relation of state to organized groups
1
332 - Financial economics
1
342 - Constitutional & administrative law
1
344 - Labor, social, education & cultural law
1
351 - Public administration
1
358 - Air & other specialized forces
1
more ...