Classification
330 - Economics
380 - Commerce, communications & transportation
657 - Accounting
12
320 - Political science
8
363 - Other social problems & services
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
7
600 - Technology
7
700 - The arts; fine & decorative arts
6
140 - Specific philosophical schools
5
900 - History & geography
4
370 - Education
3
551 - Geology, hydrology & meteorology
3
620 - Engineering & allied operations
3
720 - Architecture
3
100 - Philosophy & psychology
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
300 - Social sciences
1
340 - Law
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
580 - Plants (Botany)
1
610 - Medicine & health
1
650 - Management & auxiliary services
1