Classification
304 - Factors affecting social behavior
610 - Medicine & health
29
700 - The arts; fine & decorative arts
25
140 - Specific philosophical schools
21
000 - Computer science, information & general works
16
333 - Economics of land & energy
16
363 - Other social problems & services
16
580 - Plants (Botany)
12
380 - Commerce, communications & transportation
9
540 - Chemistry & allied sciences
9
620 - Engineering & allied operations
8
576 - Genetics & evolution
7
600 - Technology
7
615 - Pharmacology & therapeutics
4
414 - Phonology & phonetics
3
800 - Literature & rhetoric
3
900 - History & geography
3
320 - Political science
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
330 - Economics
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
770 - Photography, photographs & computer art
1
780 - Music
1