Classification
000 - Computer science, information & general works
62
001 - Knowledge
5
003 - Systems
5
004 - Data processing & computer science
26
005 - Computer programming, programs & data
65
006 - Special computer methods
12
100 - Philosophy & psychology
3
140 - Specific philosophical schools
15
152 - Perception, movement, emotions & drives
1
153 - Mental processes & intelligence
10
158 - Applied psychology
4
170 - Ethics
1
300 - Social sciences
69
302 - Social interaction
38
304 - Factors affecting social behavior
3
320 - Political science
25
330 - Economics
175
331 - Labor economics
38
332 - Financial economics
3
333 - Economics of land & energy
38
336 - Public finance
1
337 - International economics
1
338 - Production
53
340 - Law
7
341 - Law of nations
1
344 - Labor, social, education & cultural law
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
25
363 - Other social problems & services
58
364 - Criminology
1
368 - Insurance
2
370 - Education
6
374 - Adult education
1
380 - Commerce, communications & transportation
17
381 - Commerce
8
382 - International commerce
1
384 - Communications; telecommunication
17
400 - Language
1
414 - Phonology & phonetics
3
449 - Occitan & Catalan
1
500 - Natural sciences & mathematics
69
510 - Mathematics
12
515 - Analysis
1
519 - Probabilities & applied mathematics
25
520 - Astronomy & allied sciences
1
523 - Specific celestial bodies & phenomena
1
526 - Mathematical geography
2
530 - Physics
5
534 - Sound & related vibrations
2
535 - Light & infrared & ultraviolet phenomena
1
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