Classification
340 - Law
363 - Other social problems & services
370 - Education
600 - Technology
000 - Computer science, information & general works
4
330 - Economics
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
900 - History & geography
2
140 - Specific philosophical schools
1
200 - Religion
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
400 - Language
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
720 - Architecture
1