Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
580 - Plants (Botany)
610 - Medicine & health
21
333 - Economics of land & energy
20
700 - The arts; fine & decorative arts
17
000 - Computer science, information & general works
16
363 - Other social problems & services
16
620 - Engineering & allied operations
11
600 - Technology
10
551 - Geology, hydrology & meteorology
9
330 - Economics
6
576 - Genetics & evolution
6
612 - Human physiology
6
300 - Social sciences
5
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
900 - History & geography
5
340 - Law
4
800 - Literature & rhetoric
4
304 - Factors affecting social behavior
3
500 - Natural sciences & mathematics
3
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
3
720 - Architecture
3
170 - Ethics
2
400 - Language
2
615 - Pharmacology & therapeutics
2
658 - General management
2
320 - Political science
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
370 - Education
1
410 - Linguistics
1
657 - Accounting
1