Classification
370 - Education
580 - Plants (Botany)
610 - Medicine & health
17
700 - The arts; fine & decorative arts
15
333 - Economics of land & energy
13
600 - Technology
10
000 - Computer science, information & general works
9
380 - Commerce, communications & transportation
9
330 - Economics
8
363 - Other social problems & services
7
620 - Engineering & allied operations
6
900 - History & geography
5
140 - Specific philosophical schools
4
630 - Agriculture & related technologies
4
658 - General management
4
100 - Philosophy & psychology
3
400 - Language
3
551 - Geology, hydrology & meteorology
3
615 - Pharmacology & therapeutics
2
170 - Ethics
1
320 - Political science
1
336 - Public finance
1
340 - Law
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1
616 - Diseases
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1