Classification
370 - Education
620 - Engineering & allied operations
300 - Social sciences
14
600 - Technology
12
330 - Economics
9
333 - Economics of land & energy
8
900 - History & geography
8
320 - Political science
7
400 - Language
6
630 - Agriculture & related technologies
6
700 - The arts; fine & decorative arts
6
000 - Computer science, information & general works
5
140 - Specific philosophical schools
5
500 - Natural sciences & mathematics
5
100 - Philosophy & psychology
4
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
780 - Music
4
301 - Sociology & anthropology
3
340 - Law
3
410 - Linguistics
2
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
610 - Medicine & health
2
120 - Epistemology, causation & humankind
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
658 - General management
1