Classification
000 - Computer science, information & general works
1
001 - Knowledge
2
004 - Data processing & computer science
5
005 - Computer programming, programs & data
3
006 - Special computer methods
10
050 - General serial publications
1
100 - Philosophy & psychology
5
140 - Specific philosophical schools
4
150 - Psychology
1
158 - Applied psychology
1
174 - Occupational ethics
1
195 - Philosophy of Italy
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
6
301 - Sociology & anthropology
6
302 - Social interaction
1
304 - Factors affecting social behavior
3
305 - Social groups
8
306 - Culture & institutions
3
307 - Communities
3
320 - Political science
9
323 - Civil & political rights
1
327 - International relations
2
328 - The legislative process
1
330 - Economics
27
331 - Labor economics
2
333 - Economics of land & energy
5
337 - International economics
2
338 - Production
1
339 - Macroeconomics & related topics
1
340 - Law
9
343 - Military, tax, trade & industrial law
1
347 - Civil procedure & courts
1
362 - Social welfare problems & services
1
363 - Other social problems & services
3
370 - Education
18
374 - Adult education
1
375 - Curricula
1
378 - Higher education
1
380 - Commerce, communications & transportation
13
381 - Commerce
1
390 - Customs, etiquette & folklore
1
400 - Language
4
410 - Linguistics
3
414 - Phonology & phonetics
2
440 - Romance languages; French
1
495 - Languages of East & Southeast Asia
1
500 - Natural sciences & mathematics
2
510 - Mathematics
3
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