Classification
380 - Commerce, communications & transportation
576 - Genetics & evolution
340 - Law
5
140 - Specific philosophical schools
4
320 - Political science
4
363 - Other social problems & services
4
600 - Technology
4
700 - The arts; fine & decorative arts
4
720 - Architecture
4
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
900 - History & geography
3
000 - Computer science, information & general works
2
330 - Economics
2
333 - Economics of land & energy
2
170 - Ethics
1
630 - Agriculture & related technologies
1
920 - Biography, genealogy & insignia
1