Classification
000 - Computer science, information & general works
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
900 - History & geography
620 - Engineering & allied operations
10
333 - Economics of land & energy
8
700 - The arts; fine & decorative arts
7
720 - Architecture
5
140 - Specific philosophical schools
3
551 - Geology, hydrology & meteorology
3
340 - Law
2
370 - Education
2
400 - Language
2
576 - Genetics & evolution
2
610 - Medicine & health
2
658 - General management
2
200 - Religion
1
304 - Factors affecting social behavior
1
320 - Political science
1
410 - Linguistics
1
580 - Plants (Botany)
1
657 - Accounting
1
800 - Literature & rhetoric
1