Classification
900 - History & geography
38
320 - Political science
23
297 - Islam, Babism & Bahai Faith
15
800 - Literature & rhetoric
13
200 - Religion
11
700 - The arts; fine & decorative arts
10
300 - Social sciences
8
340 - Law
8
100 - Philosophy & psychology
6
301 - Sociology & anthropology
6
400 - Language
6
306 - Culture & institutions
5
330 - Economics
5
338 - Production
5
140 - Specific philosophical schools
4
333 - Economics of land & energy
4
410 - Linguistics
4
005 - Computer programming, programs & data
3
006 - Special computer methods
3
343 - Military, tax, trade & industrial law
3
364 - Criminology
3
370 - Education
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
600 - Technology
3
000 - Computer science, information & general works
2
341 - Law of nations
2
345 - Criminal law
2
363 - Other social problems & services
2
490 - Other languages
2
520 - Astronomy & allied sciences
2
616 - Diseases
2
720 - Architecture
2
780 - Music
2
001 - Knowledge
1
004 - Data processing & computer science
1
120 - Epistemology, causation & humankind
1
160 - Logic
1
179 - Other ethical norms
1
302 - Social interaction
1
304 - Factors affecting social behavior
1
305 - Social groups
1
322 - Relation of state to organized groups
1
327 - International relations
1
351 - Public administration
1
378 - Higher education
1
492 - Afro-Asiatic languages; Semitic languages
1
499 - Austronesian & other languages
1
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