Classification
000 - Computer science, information & general works
170 - Ethics
610 - Medicine & health
600 - Technology
10
140 - Specific philosophical schools
6
370 - Education
5
700 - The arts; fine & decorative arts
5
330 - Economics
4
380 - Commerce, communications & transportation
4
900 - History & geography
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
620 - Engineering & allied operations
3
100 - Philosophy & psychology
2
320 - Political science
2
361 - Social problems & social welfare in general
2
720 - Architecture
2
001 - Knowledge
1
200 - Religion
1
300 - Social sciences
1
340 - Law
1
350 - Public administration & military science
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
612 - Human physiology
1
658 - General management
1