Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
12
333 - Economics of land & energy
10
610 - Medicine & health
9
551 - Geology, hydrology & meteorology
8
600 - Technology
8
320 - Political science
6
576 - Genetics & evolution
6
620 - Engineering & allied operations
5
720 - Architecture
5
900 - History & geography
5
370 - Education
4
580 - Plants (Botany)
4
414 - Phonology & phonetics
3
581 - Specific topics in natural history
3
657 - Accounting
3
304 - Factors affecting social behavior
2
340 - Law
2
400 - Language
2
658 - General management
2
160 - Logic
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
630 - Agriculture & related technologies
1