Classification
700 - The arts; fine & decorative arts
780 - Music
900 - History & geography
800 - Literature & rhetoric
21
140 - Specific philosophical schools
16
100 - Philosophy & psychology
15
320 - Political science
15
300 - Social sciences
14
400 - Language
13
600 - Technology
13
330 - Economics
12
200 - Religion
11
370 - Education
11
620 - Engineering & allied operations
8
720 - Architecture
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
7
380 - Commerce, communications & transportation
7
410 - Linguistics
7
770 - Photography, photographs & computer art
6
301 - Sociology & anthropology
4
304 - Factors affecting social behavior
4
340 - Law
4
610 - Medicine & health
4
170 - Ethics
3
363 - Other social problems & services
3
398 - Folklore
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
791 - Public performances
3
297 - Islam, Babism & Bahai Faith
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
658 - General management
2
520 - Astronomy & allied sciences
1
530 - Physics
1
590 - Animals (Zoology)
1