Classification
000 - Computer science, information & general works
94
001 - Knowledge
4
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
010 - Bibliography
1
011 - Bibliographies
1
100 - Philosophy & psychology
3
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
12
153 - Mental processes & intelligence
5
158 - Applied psychology
1
170 - Ethics
3
236 - Eschatology
1
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
13
301 - Sociology & anthropology
1
302 - Social interaction
5
304 - Factors affecting social behavior
3
320 - Political science
269
330 - Economics
2,450
331 - Labor economics
4
332 - Financial economics
288
333 - Economics of land & energy
51
336 - Public finance
1
338 - Production
52
339 - Macroeconomics & related topics
6
340 - Law
221
346 - Private law
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
363 - Other social problems & services
25
364 - Criminology
1
368 - Insurance
4
370 - Education
8
374 - Adult education
2
380 - Commerce, communications & transportation
27
381 - Commerce
15
382 - International commerce
2
384 - Communications; telecommunication
1
400 - Language
7
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
19
510 - Mathematics
2
530 - Physics
5
540 - Chemistry & allied sciences
4
551 - Geology, hydrology & meteorology
13
576 - Genetics & evolution
15
580 - Plants (Botany)
17
581 - Specific topics in natural history
6
600 - Technology
52
more ...