Classification
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501 - Philosophy & theory
541
614 - Incidence & prevention of disease
539
511 - General principles of mathematics
530
363 - Other social problems & services
509
306 - Culture & institutions
491
543 - Analytical chemistry
487
370 - Education
486
518 - Numerical analysis
447
641 - Food & drink
403
664 - Food technology
403
523 - Specific celestial bodies & phenomena
390
657 - Accounting
388
514 - Topology
370
630 - Agriculture & related technologies
369
327 - International relations
364
910 - Geography & travel
364
546 - Inorganic chemistry
360
579 - Microorganisms, fungi & algae
355
590 - Animals (Zoology)
355
611 - Human anatomy, cytology & histology
345
634 - Orchards, fruits & forestry
316
155 - Differential & developmental psychology
310
142 - Critical philosophy
304
337 - International economics
283
302 - Social interaction
282
344 - Labor, social, education & cultural law
274
690 - Buildings
273
576 - Genetics & evolution
272
336 - Public finance
251
536 - Heat
234
339 - Macroeconomics & related topics
230
305 - Social groups
226
304 - Factors affecting social behavior
222
160 - Logic
221
410 - Linguistics
215
549 - Mineralogy
214
342 - Constitutional & administrative law
205
537 - Electricity & electronics
199
343 - Military, tax, trade & industrial law
182
930 - History of ancient world to ca. 499
172
371 - Schools & their activities; special education
167
808 - Rhetoric & collections of literature
164
534 - Sound & related vibrations
158
100 - Philosophy & psychology
157
628 - Sanitary & municipal engineering
156
361 - Social problems & social welfare in general
151
153 - Mental processes & intelligence
149
170 - Ethics
146
346 - Private law
137
809 - History, description & criticism
133
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