Classification
330 - Economics
363 - Other social problems & services
4
380 - Commerce, communications & transportation
600 - Technology
140 - Specific philosophical schools
2
170 - Ethics
2
300 - Social sciences
2
650 - Management & auxiliary services
2
657 - Accounting
2
000 - Computer science, information & general works
1
160 - Logic
1
320 - Political science
1
333 - Economics of land & energy
1
370 - Education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
658 - General management
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1