Classification
000 - Computer science, information & general works
117
001 - Knowledge
7
003 - Systems
191
004 - Data processing & computer science
1,150
005 - Computer programming, programs & data
1,144
006 - Special computer methods
1,032
016 - Bibliographies of works on specific subjects
1
020 - Library & information sciences
17
025 - Library operations
452
027 - General libraries
1
070 - News media, journalism & publishing
1
160 - Logic
1
300 - Social sciences
13
301 - Sociology & anthropology
1
302 - Social interaction
6
303 - Social processes
10
304 - Factors affecting social behavior
1
306 - Culture & institutions
1
323 - Civil & political rights
1
330 - Economics
52
331 - Labor economics
67
333 - Economics of land & energy
2
338 - Production
13
340 - Law
1
341 - Law of nations
1
343 - Military, tax, trade & industrial law
2
355 - Military science
1
362 - Social welfare problems & services
2
363 - Other social problems & services
6
364 - Criminology
3
368 - Insurance
1
370 - Education
3
371 - Schools & their activities; special education
23
374 - Adult education
3
381 - Commerce
13
384 - Communications; telecommunication
24
410 - Linguistics
9
500 - Natural sciences & mathematics
83
501 - Philosophy & theory
7
510 - Mathematics
4
511 - General principles of mathematics
9
518 - Numerical analysis
34
519 - Probabilities & applied mathematics
6
520 - Astronomy & allied sciences
3
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
540 - Chemistry & allied sciences
2
541 - Physical chemistry
2
542 - Techniques, equipment & materials
1
543 - Analytical chemistry
1
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