Classification
501 - Philosophy & theory
461
320 - Political science
46
900 - History & geography
35
160 - Logic
25
142 - Critical philosophy
19
190 - Modern western philosophy
17
530 - Physics
17
300 - Social sciences
15
340 - Law
15
120 - Epistemology, causation & humankind
13
128 - Humankind
12
100 - Philosophy & psychology
11
511 - General principles of mathematics
8
149 - Other philosophical systems
6
170 - Ethics
6
330 - Economics
6
519 - Probabilities & applied mathematics
6
109 - Historical & collected persons treatment
5
301 - Sociology & anthropology
5
610 - Medicine & health
5
006 - Special computer methods
4
110 - Metaphysics
4
153 - Mental processes & intelligence
4
507 - Education, research & related topics
4
510 - Mathematics
4
004 - Data processing & computer science
3
111 - Ontology
3
150 - Psychology
3
210 - Philosophy & theory of religion
3
500 - Natural sciences & mathematics
3
509 - Historical, geographic & persons treatment
3
514 - Topology
3
003 - Systems
2
140 - Specific philosophical schools
2
155 - Differential & developmental psychology
2
306 - Culture & institutions
2
333 - Economics of land & energy
2
338 - Production
2
570 - Life sciences; biology
2
601 - Philosophy & theory
2
620 - Engineering & allied operations
2
001 - Knowledge
1
005 - Computer programming, programs & data
1
113 - Cosmology
1
126 - The self
1
174 - Occupational ethics
1
180 - Ancient, medieval & eastern philosophy
1
189 - Medieval western philosophy
1
200 - Religion
1
304 - Factors affecting social behavior
1
more ...