Classification
364 - Criminology
133
363 - Other social problems & services
102
500 - Natural sciences & mathematics
97
330 - Economics
85
331 - Labor economics
57
000 - Computer science, information & general works
42
320 - Political science
37
700 - The arts; fine & decorative arts
36
005 - Computer programming, programs & data
33
600 - Technology
30
620 - Engineering & allied operations
29
900 - History & geography
27
340 - Law
26
333 - Economics of land & energy
23
610 - Medicine & health
22
658 - General management
22
140 - Specific philosophical schools
17
300 - Social sciences
14
338 - Production
12
001 - Knowledge
9
576 - Genetics & evolution
9
380 - Commerce, communications & transportation
7
384 - Communications; telecommunication
7
540 - Chemistry & allied sciences
7
301 - Sociology & anthropology
6
345 - Criminal law
6
530 - Physics
6
551 - Geology, hydrology & meteorology
6
570 - Life sciences; biology
6
580 - Plants (Botany)
6
100 - Philosophy & psychology
5
370 - Education
5
621 - Applied physics
5
004 - Data processing & computer science
4
302 - Social interaction
4
304 - Factors affecting social behavior
4
581 - Specific topics in natural history
4
615 - Pharmacology & therapeutics
4
410 - Linguistics
3
414 - Phonology & phonetics
3
519 - Probabilities & applied mathematics
3
670 - Manufacturing
3
800 - Literature & rhetoric
3
170 - Ethics
2
200 - Religion
2
350 - Public administration & military science
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
510 - Mathematics
2
657 - Accounting
2
more ...