Classification
000 - Computer science, information & general works
320 - Political science
610 - Medicine & health
700 - The arts; fine & decorative arts
29
330 - Economics
26
333 - Economics of land & energy
25
363 - Other social problems & services
24
600 - Technology
15
140 - Specific philosophical schools
14
380 - Commerce, communications & transportation
13
551 - Geology, hydrology & meteorology
12
581 - Specific topics in natural history
11
370 - Education
9
900 - History & geography
9
620 - Engineering & allied operations
7
630 - Agriculture & related technologies
7
300 - Social sciences
5
658 - General management
5
100 - Philosophy & psychology
4
304 - Factors affecting social behavior
4
340 - Law
4
580 - Plants (Botany)
4
361 - Social problems & social welfare in general
3
550 - Earth sciences
3
720 - Architecture
3
170 - Ethics
2
200 - Religion
2
301 - Sociology & anthropology
2
400 - Language
2
530 - Physics
2
360 - Social problems & services; associations
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
800 - Literature & rhetoric
1