Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
63
363 - Other social problems & services
41
333 - Economics of land & energy
39
140 - Specific philosophical schools
34
600 - Technology
34
580 - Plants (Botany)
26
370 - Education
25
330 - Economics
24
620 - Engineering & allied operations
19
576 - Genetics & evolution
14
900 - History & geography
14
540 - Chemistry & allied sciences
13
551 - Geology, hydrology & meteorology
13
658 - General management
13
320 - Political science
12
500 - Natural sciences & mathematics
10
720 - Architecture
10
612 - Human physiology
9
400 - Language
6
581 - Specific topics in natural history
6
630 - Agriculture & related technologies
6
100 - Philosophy & psychology
5
300 - Social sciences
5
414 - Phonology & phonetics
5
170 - Ethics
4
304 - Factors affecting social behavior
4
340 - Law
4
410 - Linguistics
4
615 - Pharmacology & therapeutics
3
800 - Literature & rhetoric
3
200 - Religion
2
361 - Social problems & social welfare in general
2
364 - Criminology
2
590 - Animals (Zoology)
2
780 - Music
2
360 - Social problems & services; associations
1
530 - Physics
1
550 - Earth sciences
1
657 - Accounting
1