Classification
301 - Sociology & anthropology
300 - Social sciences
663
900 - History & geography
430
320 - Political science
229
200 - Religion
207
700 - The arts; fine & decorative arts
178
140 - Specific philosophical schools
158
100 - Philosophy & psychology
157
330 - Economics
99
304 - Factors affecting social behavior
95
610 - Medicine & health
91
780 - Music
83
400 - Language
62
370 - Education
59
340 - Law
57
363 - Other social problems & services
54
600 - Technology
53
800 - Literature & rhetoric
48
380 - Commerce, communications & transportation
45
170 - Ethics
41
333 - Economics of land & energy
41
297 - Islam, Babism & Bahai Faith
35
410 - Linguistics
35
000 - Computer science, information & general works
33
576 - Genetics & evolution
32
630 - Agriculture & related technologies
26
160 - Logic
25
398 - Folklore
25
720 - Architecture
23
581 - Specific topics in natural history
18
620 - Engineering & allied operations
17
350 - Public administration & military science
16
361 - Social problems & social welfare in general
16
530 - Physics
14
500 - Natural sciences & mathematics
10
791 - Public performances
9
364 - Criminology
8
120 - Epistemology, causation & humankind
7
233 - Humankind
7
540 - Chemistry & allied sciences
6
770 - Photography, photographs & computer art
6
658 - General management
5
230 - Christianity & Christian theology
4
296 - Judaism
4
551 - Geology, hydrology & meteorology
4
360 - Social problems & services; associations
3
414 - Phonology & phonetics
3
580 - Plants (Botany)
3
615 - Pharmacology & therapeutics
3
193 - Philosophy of Germany & Austria
2
more ...