Classification
330 - Economics
363 - Other social problems & services
576 - Genetics & evolution
600 - Technology
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
9
000 - Computer science, information & general works
8
380 - Commerce, communications & transportation
7
620 - Engineering & allied operations
7
320 - Political science
6
140 - Specific philosophical schools
5
658 - General management
5
900 - History & geography
5
370 - Education
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
610 - Medicine & health
3
300 - Social sciences
2
340 - Law
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
657 - Accounting
2
100 - Philosophy & psychology
1
350 - Public administration & military science
1
400 - Language
1
540 - Chemistry & allied sciences
1
720 - Architecture
1
800 - Literature & rhetoric
1