Classification
551 - Geology, hydrology & meteorology
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
8
330 - Economics
6
333 - Economics of land & energy
6
363 - Other social problems & services
5
610 - Medicine & health
4
140 - Specific philosophical schools
3
320 - Political science
3
580 - Plants (Botany)
3
900 - History & geography
3
340 - Law
2
380 - Commerce, communications & transportation
2
414 - Phonology & phonetics
2
581 - Specific topics in natural history
2
600 - Technology
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
370 - Education
1
400 - Language
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1