Classification
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305 - Social groups
8
306 - Culture & institutions
17
307 - Communities
3
320 - Political science
29
321 - Systems of governments & states
1
322 - Relation of state to organized groups
1
323 - Civil & political rights
1
324 - The political process
1
327 - International relations
16
330 - Economics
11
331 - Labor economics
1
332 - Financial economics
11
333 - Economics of land & energy
11
336 - Public finance
3
337 - International economics
1
338 - Production
21
339 - Macroeconomics & related topics
2
340 - Law
7
341 - Law of nations
3
342 - Constitutional & administrative law
2
343 - Military, tax, trade & industrial law
4
344 - Labor, social, education & cultural law
2
345 - Criminal law
2
351 - Public administration
2
361 - Social problems & social welfare in general
4
362 - Social welfare problems & services
1
363 - Other social problems & services
17
364 - Criminology
4
368 - Insurance
1
370 - Education
16
371 - Schools & their activities; special education
7
372 - Elementary education
2
378 - Higher education
4
381 - Commerce
4
401 - Philosophy & theory
3
410 - Linguistics
1
418 - Standard usage & applied linguistics
3
500 - Natural sciences & mathematics
1
501 - Philosophy & theory
4
502 - Miscellany
1
507 - Education, research & related topics
1
509 - Historical, geographic & persons treatment
7
510 - Mathematics
5
511 - General principles of mathematics
2
512 - Algebra
8
515 - Analysis
8
516 - Geometry
6
518 - Numerical analysis
1
519 - Probabilities & applied mathematics
15
520 - Astronomy & allied sciences
1
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