Classification
330 - Economics
658 - General management
28
333 - Economics of land & energy
14
370 - Education
14
363 - Other social problems & services
13
320 - Political science
11
500 - Natural sciences & mathematics
11
610 - Medicine & health
11
300 - Social sciences
10
600 - Technology
10
304 - Factors affecting social behavior
9
000 - Computer science, information & general works
7
302 - Social interaction
7
338 - Production
7
620 - Engineering & allied operations
7
670 - Manufacturing
6
332 - Financial economics
5
380 - Commerce, communications & transportation
5
900 - History & geography
5
331 - Labor economics
4
551 - Geology, hydrology & meteorology
4
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
153 - Mental processes & intelligence
3
364 - Criminology
3
576 - Genetics & evolution
3
005 - Computer programming, programs & data
2
368 - Insurance
2
510 - Mathematics
2
519 - Probabilities & applied mathematics
2
720 - Architecture
2
745 - Decorative arts
2
001 - Knowledge
1
004 - Data processing & computer science
1
100 - Philosophy & psychology
1
158 - Applied psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
340 - Law
1
381 - Commerce
1
400 - Language
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
621 - Applied physics
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
780 - Music
1
800 - Literature & rhetoric
1