Classification
000 - Computer science, information & general works
42
001 - Knowledge
003 - Systems
1
004 - Data processing & computer science
5
005 - Computer programming, programs & data
52
006 - Special computer methods
25
011 - Bibliographies
2
020 - Library & information sciences
1
025 - Library operations
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
150 - Psychology
1
153 - Mental processes & intelligence
20
155 - Differential & developmental psychology
1
158 - Applied psychology
27
170 - Ethics
6
174 - Occupational ethics
1
187 - Epicurean philosophy
1
300 - Social sciences
4,082
302 - Social interaction
71
303 - Social processes
6
304 - Factors affecting social behavior
3
305 - Social groups
1
307 - Communities
2
320 - Political science
1
327 - International relations
1
330 - Economics
221
331 - Labor economics
62
332 - Financial economics
31
333 - Economics of land & energy
2
338 - Production
71
339 - Macroeconomics & related topics
2
344 - Labor, social, education & cultural law
2
351 - Public administration
1
352 - General considerations of public administration
2
355 - Military science
1
361 - Social problems & social welfare in general
2
362 - Social welfare problems & services
3
363 - Other social problems & services
7
364 - Criminology
12
368 - Insurance
9
370 - Education
3
371 - Schools & their activities; special education
4
374 - Adult education
1
380 - Commerce, communications & transportation
5
381 - Commerce
51
384 - Communications; telecommunication
21
387 - Water, air & space transportation
2
394 - General customs
1
500 - Natural sciences & mathematics
97
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