Classification
000 - Computer science, information & general works
363 - Other social problems & services
900 - History & geography
14
700 - The arts; fine & decorative arts
13
320 - Political science
8
330 - Economics
7
333 - Economics of land & energy
5
300 - Social sciences
4
540 - Chemistry & allied sciences
4
200 - Religion
3
301 - Sociology & anthropology
3
581 - Specific topics in natural history
3
100 - Philosophy & psychology
2
340 - Law
2
370 - Education
2
380 - Commerce, communications & transportation
2
414 - Phonology & phonetics
2
576 - Genetics & evolution
2
600 - Technology
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
400 - Language
1
410 - Linguistics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1