Classification
304 - Factors affecting social behavior
580 - Plants (Botany)
000 - Computer science, information & general works
8
600 - Technology
7
363 - Other social problems & services
5
700 - The arts; fine & decorative arts
5
330 - Economics
4
333 - Economics of land & energy
4
610 - Medicine & health
4
620 - Engineering & allied operations
4
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
3
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
3
140 - Specific philosophical schools
2
540 - Chemistry & allied sciences
2
551 - Geology, hydrology & meteorology
2
900 - History & geography
2
300 - Social sciences
1
320 - Political science
1
520 - Astronomy & allied sciences
1
576 - Genetics & evolution
1