Classification
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
333 - Economics of land & energy
42
000 - Computer science, information & general works
31
600 - Technology
30
320 - Political science
22
900 - History & geography
22
140 - Specific philosophical schools
19
620 - Engineering & allied operations
18
551 - Geology, hydrology & meteorology
16
610 - Medicine & health
16
370 - Education
15
720 - Architecture
9
658 - General management
8
576 - Genetics & evolution
6
581 - Specific topics in natural history
6
580 - Plants (Botany)
5
630 - Agriculture & related technologies
5
304 - Factors affecting social behavior
4
340 - Law
4
400 - Language
4
414 - Phonology & phonetics
4
500 - Natural sciences & mathematics
4
300 - Social sciences
3
530 - Physics
3
200 - Religion
2
410 - Linguistics
2
657 - Accounting
2
800 - Literature & rhetoric
2
160 - Logic
1
301 - Sociology & anthropology
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
650 - Management & auxiliary services
1
791 - Public performances
1