Classification
300 - Social sciences
330 - Economics
610 - Medicine & health
320 - Political science
11
600 - Technology
9
900 - History & geography
9
140 - Specific philosophical schools
8
363 - Other social problems & services
8
100 - Philosophy & psychology
7
333 - Economics of land & energy
7
301 - Sociology & anthropology
6
700 - The arts; fine & decorative arts
5
000 - Computer science, information & general works
4
340 - Law
4
370 - Education
4
620 - Engineering & allied operations
4
170 - Ethics
3
200 - Religion
3
302 - Social interaction
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
658 - General management
3
158 - Applied psychology
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
650 - Management & auxiliary services
2
780 - Music
2
297 - Islam, Babism & Bahai Faith
1
332 - Financial economics
1
338 - Production
1
350 - Public administration & military science
1
384 - Communications; telecommunication
1
400 - Language
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
720 - Architecture
1
800 - Literature & rhetoric
1