Classification
000 - Computer science, information & general works
340 - Law
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
380 - Commerce, communications & transportation
5
330 - Economics
4
900 - History & geography
4
370 - Education
3
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
200 - Religion
1
304 - Factors affecting social behavior
1
400 - Language
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
720 - Architecture
1