Classification
140 - Specific philosophical schools
551 - Geology, hydrology & meteorology
363 - Other social problems & services
16
333 - Economics of land & energy
15
000 - Computer science, information & general works
13
330 - Economics
13
700 - The arts; fine & decorative arts
13
320 - Political science
8
380 - Commerce, communications & transportation
8
600 - Technology
8
610 - Medicine & health
8
900 - History & geography
7
620 - Engineering & allied operations
6
370 - Education
5
581 - Specific topics in natural history
4
300 - Social sciences
3
658 - General management
3
100 - Philosophy & psychology
2
170 - Ethics
2
304 - Factors affecting social behavior
2
340 - Law
2
530 - Physics
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
550 - Earth sciences
1
630 - Agriculture & related technologies
1
657 - Accounting
1
800 - Literature & rhetoric
1