Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
630 - Agriculture & related technologies
600 - Technology
10
620 - Engineering & allied operations
9
580 - Plants (Botany)
7
610 - Medicine & health
6
700 - The arts; fine & decorative arts
6
333 - Economics of land & energy
5
330 - Economics
4
363 - Other social problems & services
4
551 - Geology, hydrology & meteorology
4
140 - Specific philosophical schools
2
540 - Chemistry & allied sciences
2
304 - Factors affecting social behavior
1
320 - Political science
1
361 - Social problems & social welfare in general
1
370 - Education
1
400 - Language
1
576 - Genetics & evolution
1
612 - Human physiology
1
658 - General management
1
720 - Architecture
1
900 - History & geography
1