Classification
380 - Commerce, communications & transportation
900 - History & geography
18
320 - Political science
15
330 - Economics
12
300 - Social sciences
8
000 - Computer science, information & general works
7
700 - The arts; fine & decorative arts
7
301 - Sociology & anthropology
5
410 - Linguistics
5
370 - Education
4
100 - Philosophy & psychology
3
170 - Ethics
3
200 - Religion
3
340 - Law
3
140 - Specific philosophical schools
2
363 - Other social problems & services
2
400 - Language
2
600 - Technology
2
620 - Engineering & allied operations
2
120 - Epistemology, causation & humankind
1
333 - Economics of land & energy
1
350 - Public administration & military science
1
384 - Communications; telecommunication
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1