Classification
100 - Philosophy & psychology
140 - Specific philosophical schools
900 - History & geography
66
200 - Religion
26
170 - Ethics
24
320 - Political science
19
700 - The arts; fine & decorative arts
19
800 - Literature & rhetoric
17
301 - Sociology & anthropology
16
300 - Social sciences
14
370 - Education
14
410 - Linguistics
12
340 - Law
9
600 - Technology
9
000 - Computer science, information & general works
8
330 - Economics
7
363 - Other social problems & services
7
576 - Genetics & evolution
6
333 - Economics of land & energy
5
400 - Language
5
610 - Medicine & health
4
620 - Engineering & allied operations
4
780 - Music
4
120 - Epistemology, causation & humankind
3
160 - Logic
3
581 - Specific topics in natural history
3
304 - Factors affecting social behavior
2
361 - Social problems & social welfare in general
2
380 - Commerce, communications & transportation
2
530 - Physics
2
297 - Islam, Babism & Bahai Faith
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
791 - Public performances
1
880 - Hellenic literatures; classical Greek
1
920 - Biography, genealogy & insignia
1