Classification
000 - Computer science, information & general works
37
001 - Knowledge
6
004 - Data processing & computer science
8
006 - Special computer methods
1
100 - Philosophy & psychology
271
120 - Epistemology, causation & humankind
16
121 - Epistemology
1
128 - Humankind
1
140 - Specific philosophical schools
75
150 - Psychology
1
153 - Mental processes & intelligence
6
155 - Differential & developmental psychology
1
158 - Applied psychology
3
160 - Logic
3
170 - Ethics
32
200 - Religion
68
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
7
300 - Social sciences
301 - Sociology & anthropology
120
302 - Social interaction
26
303 - Social processes
2
304 - Factors affecting social behavior
74
305 - Social groups
2
306 - Culture & institutions
1
320 - Political science
386
321 - Systems of governments & states
1
330 - Economics
167
331 - Labor economics
8
332 - Financial economics
1
333 - Economics of land & energy
34
337 - International economics
1
338 - Production
11
340 - Law
77
350 - Public administration & military science
4
360 - Social problems & services; associations
7
361 - Social problems & social welfare in general
17
363 - Other social problems & services
28
364 - Criminology
10
368 - Insurance
1
370 - Education
131
371 - Schools & their activities; special education
1
380 - Commerce, communications & transportation
49
381 - Commerce
3
384 - Communications; telecommunication
10
400 - Language
18
410 - Linguistics
15
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
41
519 - Probabilities & applied mathematics
1
more ...