Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
333 - Economics of land & energy
39
700 - The arts; fine & decorative arts
36
363 - Other social problems & services
26
330 - Economics
19
600 - Technology
19
140 - Specific philosophical schools
16
320 - Political science
12
551 - Geology, hydrology & meteorology
12
610 - Medicine & health
11
580 - Plants (Botany)
10
620 - Engineering & allied operations
10
900 - History & geography
10
370 - Education
9
530 - Physics
9
414 - Phonology & phonetics
8
576 - Genetics & evolution
8
340 - Law
7
500 - Natural sciences & mathematics
7
540 - Chemistry & allied sciences
7
581 - Specific topics in natural history
5
612 - Human physiology
5
300 - Social sciences
4
304 - Factors affecting social behavior
4
630 - Agriculture & related technologies
3
658 - General management
3
720 - Architecture
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
410 - Linguistics
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
400 - Language
1
550 - Earth sciences
1
657 - Accounting
1