Classification
100 - Philosophy & psychology
500 - Natural sciences & mathematics
174
900 - History & geography
167
300 - Social sciences
147
200 - Religion
121
700 - The arts; fine & decorative arts
90
320 - Political science
82
370 - Education
67
610 - Medicine & health
59
000 - Computer science, information & general works
54
800 - Literature & rhetoric
53
333 - Economics of land & energy
52
600 - Technology
52
400 - Language
51
330 - Economics
50
301 - Sociology & anthropology
47
340 - Law
45
140 - Specific philosophical schools
40
363 - Other social problems & services
38
170 - Ethics
37
410 - Linguistics
23
576 - Genetics & evolution
22
620 - Engineering & allied operations
22
297 - Islam, Babism & Bahai Faith
19
380 - Commerce, communications & transportation
19
780 - Music
18
581 - Specific topics in natural history
13
120 - Epistemology, causation & humankind
12
530 - Physics
12
630 - Agriculture & related technologies
7
658 - General management
7
361 - Social problems & social welfare in general
6
551 - Geology, hydrology & meteorology
6
612 - Human physiology
6
296 - Judaism
5
540 - Chemistry & allied sciences
5
720 - Architecture
5
304 - Factors affecting social behavior
4
770 - Photography, photographs & computer art
4
520 - Astronomy & allied sciences
3
580 - Plants (Botany)
3
160 - Logic
2
350 - Public administration & military science
2
364 - Criminology
2
414 - Phonology & phonetics
2
590 - Animals (Zoology)
2
791 - Public performances
2
336 - Public finance
1
360 - Social problems & services; associations
1
398 - Folklore
1