Classification
000 - Computer science, information & general works
7
400 - Language
600 - Technology
5
330 - Economics
4
370 - Education
4
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
658 - General management
2
300 - Social sciences
1
320 - Political science
1
363 - Other social problems & services
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
900 - History & geography
1