Classification
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342 - Constitutional & administrative law
4
343 - Military, tax, trade & industrial law
7
344 - Labor, social, education & cultural law
7
346 - Private law
8
347 - Civil procedure & courts
2
350 - Public administration & military science
1
351 - Public administration
3
352 - General considerations of public administration
6
353 - Specific fields of public administration
1
355 - Military science
1
358 - Air & other specialized forces
1
359 - Sea forces & warfare
1
360 - Social problems & services; associations
5
361 - Social problems & social welfare in general
3
362 - Social welfare problems & services
6
363 - Other social problems & services
87
364 - Criminology
26
368 - Insurance
19
370 - Education
54
371 - Schools & their activities; special education
26
374 - Adult education
1,460
378 - Higher education
4
380 - Commerce, communications & transportation
37
381 - Commerce
50
382 - International commerce
2
384 - Communications; telecommunication
293
400 - Language
6
401 - Philosophy & theory
1
410 - Linguistics
4
414 - Phonology & phonetics
2
417 - Dialectology & historical linguistics
1
418 - Standard usage & applied linguistics
3
440 - Romance languages; French
1
500 - Natural sciences & mathematics
412
501 - Philosophy & theory
1
502 - Miscellany
2
507 - Education, research & related topics
1
509 - Historical, geographic & persons treatment
1
510 - Mathematics
15
511 - General principles of mathematics
3
512 - Algebra
2
515 - Analysis
4
516 - Geometry
2
518 - Numerical analysis
11
519 - Probabilities & applied mathematics
21
520 - Astronomy & allied sciences
1
526 - Mathematical geography
1
530 - Physics
11
531 - Classical mechanics; solid mechanics
1
540 - Chemistry & allied sciences
5
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