Classification
170 - Ethics
610 - Medicine & health
140 - Specific philosophical schools
7
340 - Law
6
363 - Other social problems & services
6
580 - Plants (Botany)
5
330 - Economics
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
361 - Social problems & social welfare in general
3
600 - Technology
3
620 - Engineering & allied operations
3
100 - Philosophy & psychology
2
320 - Political science
2
333 - Economics of land & energy
2
616 - Diseases
2
900 - History & geography
2
001 - Knowledge
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
362 - Social welfare problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
658 - General management
1
660 - Chemical engineering
1
720 - Architecture
1
800 - Literature & rhetoric
1