Classification
350 - Public administration & military science
600 - Technology
330 - Economics
4
333 - Economics of land & energy
3
000 - Computer science, information & general works
2
340 - Law
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
370 - Education
1
380 - Commerce, communications & transportation
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
612 - Human physiology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
657 - Accounting
1