Classification
100 - Philosophy & psychology
900 - History & geography
148
320 - Political science
139
370 - Education
82
140 - Specific philosophical schools
72
170 - Ethics
63
700 - The arts; fine & decorative arts
62
200 - Religion
61
330 - Economics
57
300 - Social sciences
52
340 - Law
33
800 - Literature & rhetoric
33
600 - Technology
23
301 - Sociology & anthropology
20
530 - Physics
19
400 - Language
18
410 - Linguistics
17
120 - Epistemology, causation & humankind
16
333 - Economics of land & energy
16
380 - Commerce, communications & transportation
16
581 - Specific topics in natural history
14
000 - Computer science, information & general works
12
363 - Other social problems & services
12
610 - Medicine & health
10
780 - Music
10
296 - Judaism
9
791 - Public performances
9
576 - Genetics & evolution
8
551 - Geology, hydrology & meteorology
6
620 - Engineering & allied operations
6
160 - Logic
5
770 - Photography, photographs & computer art
5
304 - Factors affecting social behavior
4
500 - Natural sciences & mathematics
4
630 - Agriculture & related technologies
4
720 - Architecture
3
297 - Islam, Babism & Bahai Faith
2
350 - Public administration & military science
2
364 - Criminology
2
398 - Folklore
2
580 - Plants (Botany)
2
657 - Accounting
2
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
658 - General management
1
880 - Hellenic literatures; classical Greek
1