Classification
330 - Economics
18
956 - Middle East (Near East)
17
320 - Political science
16
900 - History & geography
12
355 - Military science
10
297 - Islam, Babism & Bahai Faith
7
341 - Law of nations
6
610 - Medicine & health
6
700 - The arts; fine & decorative arts
6
333 - Economics of land & energy
5
363 - Other social problems & services
5
820 - English & Old English literatures
4
935 - Mesopotamia & Iranian Plateau to 637
4
304 - Factors affecting social behavior
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
200 - Religion
2
230 - Christianity & Christian theology
2
331 - Labor economics
2
398 - Folklore
2
410 - Linguistics
2
570 - Life sciences; biology
2
892 - Afro-Asiatic literatures; Semitic literatures
2
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
1
275 - History of Christianity in Asia
1
292 - Greek & Roman religion
1
296 - Judaism
1
300 - Social sciences
1
301 - Sociology & anthropology
1
305 - Social groups
1
322 - Relation of state to organized groups
1
327 - International relations
1
339 - Macroeconomics & related topics
1
343 - Military, tax, trade & industrial law
1
346 - Private law
1
352 - General considerations of public administration
1
353 - Specific fields of public administration
1
356 - Infantry forces & warfare
1
359 - Sea forces & warfare
1
362 - Social welfare problems & services
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
600 - Technology
1
601 - Philosophy & theory
1
616 - Diseases
1
711 - Area planning
1
more ...