Classification
140 - Specific philosophical schools
363 - Other social problems & services
370 - Education
2
380 - Commerce, communications & transportation
400 - Language
600 - Technology
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
720 - Architecture
900 - History & geography
2
000 - Computer science, information & general works
1
330 - Economics
1