Classification
330 - Economics
7,943
320 - Political science
7,886
900 - History & geography
1,885
340 - Law
1,435
300 - Social sciences
964
576 - Genetics & evolution
917
820 - English & Old English literatures
514
630 - Agriculture & related technologies
175
700 - The arts; fine & decorative arts
101
940 - History of Europe
64
333 - Economics of land & energy
53
370 - Education
46
200 - Religion
41
610 - Medicine & health
37
304 - Factors affecting social behavior
19
100 - Philosophy & psychology
17
800 - Literature & rhetoric
17
840 - Literatures of Romance languages
17
280 - Christian denominations & sects
14
380 - Commerce, communications & transportation
14
170 - Ethics
12
360 - Social problems & services; associations
12
160 - Logic
10
363 - Other social problems & services
10
301 - Sociology & anthropology
9
780 - Music
8
336 - Public finance
7
400 - Language
7
260 - Social & ecclesiastical theology
6
658 - General management
6
500 - Natural sciences & mathematics
5
010 - Bibliography
4
270 - History of Christianity & Christian church
4
338 - Production
4
000 - Computer science, information & general works
3
190 - Modern western philosophy
3
600 - Technology
3
790 - Recreational & performing arts
3
140 - Specific philosophical schools
2
210 - Philosophy & theory of religion
2
250 - Christian orders & local church
2
282 - Roman Catholic Church
2
302 - Social interaction
2
331 - Labor economics
2
350 - Public administration & military science
2
670 - Manufacturing
2
720 - Architecture
2
936 - Europe north & west of Italy to ca. 499
2
944 - France & Monaco
2
970 - History of North America
2
more ...