Classification
320 - Political science
333 - Economics of land & energy
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
330 - Economics
16
000 - Computer science, information & general works
14
363 - Other social problems & services
11
900 - History & geography
11
620 - Engineering & allied operations
10
720 - Architecture
8
610 - Medicine & health
7
370 - Education
6
551 - Geology, hydrology & meteorology
6
140 - Specific philosophical schools
4
800 - Literature & rhetoric
4
576 - Genetics & evolution
3
657 - Accounting
3
658 - General management
3
300 - Social sciences
1
304 - Factors affecting social behavior
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1