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