Classification
610 - Medicine & health
630 - Agriculture & related technologies
900 - History & geography
600 - Technology
12
620 - Engineering & allied operations
11
330 - Economics
10
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
9
580 - Plants (Botany)
8
140 - Specific philosophical schools
6
363 - Other social problems & services
6
320 - Political science
5
000 - Computer science, information & general works
4
576 - Genetics & evolution
4
380 - Commerce, communications & transportation
3
658 - General management
3
720 - Architecture
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
297 - Islam, Babism & Bahai Faith
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
657 - Accounting
1