Classification
140 - Specific philosophical schools
700 - The arts; fine & decorative arts
900 - History & geography
24
000 - Computer science, information & general works
23
380 - Commerce, communications & transportation
23
600 - Technology
21
300 - Social sciences
20
610 - Medicine & health
19
363 - Other social problems & services
17
330 - Economics
16
320 - Political science
12
333 - Economics of land & energy
12
370 - Education
11
100 - Philosophy & psychology
9
800 - Literature & rhetoric
8
304 - Factors affecting social behavior
7
551 - Geology, hydrology & meteorology
7
576 - Genetics & evolution
7
620 - Engineering & allied operations
7
301 - Sociology & anthropology
5
658 - General management
5
200 - Religion
4
581 - Specific topics in natural history
4
780 - Music
4
170 - Ethics
3
400 - Language
3
410 - Linguistics
3
630 - Agriculture & related technologies
3
770 - Photography, photographs & computer art
3
361 - Social problems & social welfare in general
2
530 - Physics
2
580 - Plants (Botany)
2
720 - Architecture
2
302 - Social interaction
1
340 - Law
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
791 - Public performances
1