Classification
380 - Commerce, communications & transportation
333 - Economics of land & energy
10
900 - History & geography
10
330 - Economics
9
700 - The arts; fine & decorative arts
9
600 - Technology
7
000 - Computer science, information & general works
6
320 - Political science
5
363 - Other social problems & services
5
551 - Geology, hydrology & meteorology
5
620 - Engineering & allied operations
5
370 - Education
4
610 - Medicine & health
4
500 - Natural sciences & mathematics
3
720 - Architecture
3
304 - Factors affecting social behavior
2
340 - Law
2
580 - Plants (Botany)
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
657 - Accounting
1
658 - General management
1
800 - Literature & rhetoric
1