Classification
330 - Economics
363 - Other social problems & services
700 - The arts; fine & decorative arts
720 - Architecture
900 - History & geography
12
333 - Economics of land & energy
10
000 - Computer science, information & general works
9
380 - Commerce, communications & transportation
9
600 - Technology
9
140 - Specific philosophical schools
7
370 - Education
7
620 - Engineering & allied operations
7
320 - Political science
6
551 - Geology, hydrology & meteorology
5
610 - Medicine & health
5
576 - Genetics & evolution
2
658 - General management
2
297 - Islam, Babism & Bahai Faith
1
400 - Language
1
550 - Earth sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1