Classification
000 - Computer science, information & general works
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
900 - History & geography
333 - Economics of land & energy
7
600 - Technology
7
320 - Political science
5
620 - Engineering & allied operations
5
720 - Architecture
5
140 - Specific philosophical schools
4
370 - Education
3
551 - Geology, hydrology & meteorology
3
610 - Medicine & health
3
581 - Specific topics in natural history
2
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
400 - Language
1
414 - Phonology & phonetics
1
550 - Earth sciences
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
658 - General management
1