Classification
700 - The arts; fine & decorative arts
780 - Music
900 - History & geography
140 - Specific philosophical schools
15
800 - Literature & rhetoric
14
100 - Philosophy & psychology
12
600 - Technology
11
320 - Political science
10
300 - Social sciences
9
370 - Education
9
720 - Architecture
9
330 - Economics
8
380 - Commerce, communications & transportation
8
620 - Engineering & allied operations
8
200 - Religion
6
000 - Computer science, information & general works
5
400 - Language
5
770 - Photography, photographs & computer art
5
791 - Public performances
5
170 - Ethics
4
333 - Economics of land & energy
4
340 - Law
3
500 - Natural sciences & mathematics
3
610 - Medicine & health
3
301 - Sociology & anthropology
2
363 - Other social problems & services
2
398 - Folklore
2
410 - Linguistics
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
658 - General management
2
304 - Factors affecting social behavior
1
530 - Physics
1
590 - Animals (Zoology)
1
630 - Agriculture & related technologies
1
809 - History, description & criticism
1