Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
7
140 - Specific philosophical schools
6
363 - Other social problems & services
6
600 - Technology
6
620 - Engineering & allied operations
6
333 - Economics of land & energy
5
551 - Geology, hydrology & meteorology
5
330 - Economics
4
900 - History & geography
4
000 - Computer science, information & general works
3
320 - Political science
2
576 - Genetics & evolution
2
304 - Factors affecting social behavior
1
340 - Law
1
360 - Social problems & services; associations
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
630 - Agriculture & related technologies
1
658 - General management
1