Classification
380 - Commerce, communications & transportation
600 - Technology
19
333 - Economics of land & energy
16
620 - Engineering & allied operations
15
700 - The arts; fine & decorative arts
15
900 - History & geography
15
000 - Computer science, information & general works
10
363 - Other social problems & services
9
330 - Economics
7
320 - Political science
6
576 - Genetics & evolution
6
580 - Plants (Botany)
6
610 - Medicine & health
6
551 - Geology, hydrology & meteorology
5
340 - Law
3
370 - Education
3
500 - Natural sciences & mathematics
3
530 - Physics
3
650 - Management & auxiliary services
3
658 - General management
3
140 - Specific philosophical schools
1
300 - Social sciences
1
400 - Language
1
630 - Agriculture & related technologies
1
657 - Accounting
1
800 - Literature & rhetoric
1