Classification
000 - Computer science, information & general works
154
001 - Knowledge
2
025 - Library operations
1
070 - News media, journalism & publishing
3
100 - Philosophy & psychology
273
140 - Specific philosophical schools
259
150 - Psychology
1
154 - Subconscious & altered states
1
155 - Differential & developmental psychology
3
170 - Ethics
158
174 - Occupational ethics
3
200 - Religion
11
261 - Social theology
1
300 - Social sciences
9
301 - Sociology & anthropology
3
302 - Social interaction
2
304 - Factors affecting social behavior
6
305 - Social groups
9
306 - Culture & institutions
4
320 - Political science
25
327 - International relations
1
330 - Economics
931
331 - Labor economics
6
333 - Economics of land & energy
58
338 - Production
8
340 - Law
95
344 - Labor, social, education & cultural law
2
346 - Private law
1
353 - Specific fields of public administration
3
355 - Military science
2
358 - Air & other specialized forces
3
361 - Social problems & social welfare in general
99
362 - Social welfare problems & services
73
363 - Other social problems & services
362
365 - Penal & related institutions
2
368 - Insurance
2
370 - Education
314
371 - Schools & their activities; special education
2
372 - Elementary education
2
380 - Commerce, communications & transportation
200
394 - General customs
1
400 - Language
17
410 - Linguistics
2
500 - Natural sciences & mathematics
25
501 - Philosophy & theory
1
502 - Miscellany
1
507 - Education, research & related topics
4
509 - Historical, geographic & persons treatment
1
520 - Astronomy & allied sciences
1
530 - Physics
2
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