Classification
380 - Commerce, communications & transportation
3
400 - Language
600 - Technology
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
330 - Economics
2
333 - Economics of land & energy
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
370 - Education
1
720 - Architecture
1