Classification
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501 - Philosophy & theory
541
614 - Incidence & prevention of disease
540
511 - General principles of mathematics
530
363 - Other social problems & services
524
306 - Culture & institutions
511
370 - Education
494
543 - Analytical chemistry
487
518 - Numerical analysis
448
641 - Food & drink
403
664 - Food technology
403
523 - Specific celestial bodies & phenomena
392
657 - Accounting
386
910 - Geography & travel
375
514 - Topology
371
630 - Agriculture & related technologies
369
327 - International relations
364
546 - Inorganic chemistry
360
579 - Microorganisms, fungi & algae
355
590 - Animals (Zoology)
355
611 - Human anatomy, cytology & histology
344
634 - Orchards, fruits & forestry
316
155 - Differential & developmental psychology
309
142 - Critical philosophy
304
576 - Genetics & evolution
290
337 - International economics
283
302 - Social interaction
282
344 - Labor, social, education & cultural law
279
690 - Buildings
272
336 - Public finance
251
536 - Heat
234
339 - Macroeconomics & related topics
230
410 - Linguistics
227
305 - Social groups
226
304 - Factors affecting social behavior
222
160 - Logic
221
549 - Mineralogy
215
342 - Constitutional & administrative law
205
537 - Electricity & electronics
199
343 - Military, tax, trade & industrial law
184
930 - History of ancient world to ca. 499
172
371 - Schools & their activities; special education
168
190 - Modern western philosophy
165
628 - Sanitary & municipal engineering
165
808 - Rhetoric & collections of literature
164
534 - Sound & related vibrations
158
100 - Philosophy & psychology
157
361 - Social problems & social welfare in general
151
153 - Mental processes & intelligence
149
170 - Ethics
146
346 - Private law
137
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