Classification
000 - Computer science, information & general works
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
330 - Economics
8
700 - The arts; fine & decorative arts
8
333 - Economics of land & energy
6
900 - History & geography
5
140 - Specific philosophical schools
4
620 - Engineering & allied operations
4
370 - Education
3
610 - Medicine & health
3
320 - Political science
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
720 - Architecture
2
160 - Logic
1
304 - Factors affecting social behavior
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
657 - Accounting
1