Classification
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346 - Private law
72
361 - Social problems & social welfare in general
72
910 - Geography & travel
67
364 - Criminology
65
576 - Genetics & evolution
61
303 - Social processes
60
336 - Public finance
60
550 - Earth sciences
59
001 - Knowledge
58
515 - Analysis
57
617 - Surgery & related medical specialties
56
410 - Linguistics
53
612 - Human physiology
53
341 - Law of nations
52
371 - Schools & their activities; special education
49
381 - Commerce
49
170 - Ethics
48
770 - Photography, photographs & computer art
48
670 - Manufacturing
47
337 - International economics
45
342 - Constitutional & administrative law
45
539 - Modern physics
45
571 - Physiology & related subjects
45
339 - Macroeconomics & related topics
43
830 - Literatures of Germanic languages
43
378 - Higher education
42
512 - Algebra
41
570 - Life sciences; biology
40
580 - Plants (Botany)
40
296 - Judaism
39
344 - Labor, social, education & cultural law
39
362 - Social welfare problems & services
39
360 - Social problems & services; associations
38
615 - Pharmacology & therapeutics
38
614 - Incidence & prevention of disease
37
745 - Decorative arts
37
297 - Islam, Babism & Bahai Faith
35
345 - Criminal law
35
791 - Public performances
35
809 - History, description & criticism
35
540 - Chemistry & allied sciences
33
343 - Military, tax, trade & industrial law
32
572 - Biochemistry
32
581 - Specific topics in natural history
32
613 - Personal health & safety
32
720 - Architecture
31
347 - Civil procedure & courts
30
660 - Chemical engineering
30
324 - The political process
28
374 - Adult education
28
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