Classification
341 - Law of nations
68
320 - Political science
35
140 - Specific philosophical schools
28
340 - Law
27
330 - Economics
22
333 - Economics of land & energy
21
363 - Other social problems & services
19
551 - Geology, hydrology & meteorology
10
380 - Commerce, communications & transportation
9
170 - Ethics
6
610 - Medicine & health
6
700 - The arts; fine & decorative arts
6
342 - Constitutional & administrative law
5
344 - Labor, social, education & cultural law
5
600 - Technology
5
000 - Computer science, information & general works
4
200 - Religion
4
301 - Sociology & anthropology
4
304 - Factors affecting social behavior
4
581 - Specific topics in natural history
4
900 - History & geography
4
300 - Social sciences
3
338 - Production
3
345 - Criminal law
3
630 - Agriculture & related technologies
3
303 - Social processes
2
327 - International relations
2
332 - Financial economics
2
343 - Military, tax, trade & industrial law
2
346 - Private law
2
352 - General considerations of public administration
2
370 - Education
2
100 - Philosophy & psychology
1
297 - Islam, Babism & Bahai Faith
1
305 - Social groups
1
323 - Civil & political rights
1
353 - Specific fields of public administration
1
355 - Military science
1
362 - Social welfare problems & services
1
400 - Language
1
570 - Life sciences; biology
1
620 - Engineering & allied operations
1
657 - Accounting
1
658 - General management
1
949 - Other parts of Europe
1
954 - South Asia; India
1