Classification
000 - Computer science, information & general works
4
001 - Knowledge
2
003 - Systems
25
004 - Data processing & computer science
474
005 - Computer programming, programs & data
755
006 - Special computer methods
760
025 - Library operations
62
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
150 - Psychology
1
152 - Perception, movement, emotions & drives
1
153 - Mental processes & intelligence
1
300 - Social sciences
78
301 - Sociology & anthropology
13
302 - Social interaction
5
303 - Social processes
56
306 - Culture & institutions
1
307 - Communities
1
320 - Political science
5
330 - Economics
127
331 - Labor economics
1
332 - Financial economics
1
333 - Economics of land & energy
2
336 - Public finance
1
338 - Production
4
339 - Macroeconomics & related topics
1
340 - Law
2
341 - Law of nations
2
343 - Military, tax, trade & industrial law
3
351 - Public administration
2
363 - Other social problems & services
2
370 - Education
3
371 - Schools & their activities; special education
117
374 - Adult education
1
380 - Commerce, communications & transportation
2
381 - Commerce
39
410 - Linguistics
1
500 - Natural sciences & mathematics
8
501 - Philosophy & theory
5
509 - Historical, geographic & persons treatment
1
510 - Mathematics
2
511 - General principles of mathematics
6
515 - Analysis
2
516 - Geometry
1
518 - Numerical analysis
18
519 - Probabilities & applied mathematics
13
520 - Astronomy & allied sciences
2
530 - Physics
8
539 - Modern physics
1
more ...