Classification
140 - Specific philosophical schools
330 - Economics
5
320 - Political science
4
370 - Education
4
380 - Commerce, communications & transportation
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
600 - Technology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
160 - Logic
1
170 - Ethics
1
300 - Social sciences
1
340 - Law
1
364 - Criminology
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1