Classification
100 - Philosophy & psychology
300 - Social sciences
383
320 - Political science
355
900 - History & geography
293
370 - Education
211
500 - Natural sciences & mathematics
203
200 - Religion
168
700 - The arts; fine & decorative arts
162
330 - Economics
160
170 - Ethics
137
610 - Medicine & health
125
140 - Specific philosophical schools
123
600 - Technology
116
340 - Law
114
333 - Economics of land & energy
106
301 - Sociology & anthropology
96
000 - Computer science, information & general works
94
363 - Other social problems & services
73
400 - Language
69
120 - Epistemology, causation & humankind
50
530 - Physics
49
576 - Genetics & evolution
48
800 - Literature & rhetoric
48
380 - Commerce, communications & transportation
45
410 - Linguistics
39
620 - Engineering & allied operations
37
581 - Specific topics in natural history
25
297 - Islam, Babism & Bahai Faith
19
780 - Music
17
361 - Social problems & social welfare in general
16
630 - Agriculture & related technologies
15
720 - Architecture
14
304 - Factors affecting social behavior
13
551 - Geology, hydrology & meteorology
12
770 - Photography, photographs & computer art
11
160 - Logic
10
414 - Phonology & phonetics
10
612 - Human physiology
10
364 - Criminology
8
580 - Plants (Botany)
8
296 - Judaism
7
520 - Astronomy & allied sciences
7
658 - General management
7
360 - Social problems & services; associations
6
350 - Public administration & military science
5
540 - Chemistry & allied sciences
5
920 - Biography, genealogy & insignia
4
193 - Philosophy of Germany & Austria
3
657 - Accounting
3
155 - Differential & developmental psychology
2
more ...