Classification
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516 - Geometry
548
547 - Organic chemistry
544
539 - Modern physics
520
300 - Social sciences
515
618 - Gynecology, obstetrics, pediatrics & geriatrics
504
340 - Law
496
332 - Financial economics
493
500 - Natural sciences & mathematics
489
025 - Library operations
488
641 - Food & drink
452
523 - Specific celestial bodies & phenomena
451
690 - Buildings
415
511 - General principles of mathematics
411
339 - Macroeconomics & related topics
394
307 - Communities
373
628 - Sanitary & municipal engineering
359
302 - Social interaction
357
303 - Social processes
338
364 - Criminology
334
809 - History, description & criticism
334
341 - Law of nations
333
631 - Techniques, equipment & materials
331
543 - Analytical chemistry
327
418 - Standard usage & applied linguistics
322
650 - Management & auxiliary services
318
576 - Genetics & evolution
314
361 - Social problems & social welfare in general
303
155 - Differential & developmental psychology
301
930 - History of ancient world to ca. 499
300
378 - Higher education
298
581 - Specific topics in natural history
292
531 - Classical mechanics; solid mechanics
283
337 - International economics
281
150 - Psychology
253
343 - Military, tax, trade & industrial law
250
170 - Ethics
245
061 - Organizations in North America
243
501 - Philosophy & theory
236
062 - Organizations in British Isles; in England
231
537 - Electricity & electronics
216
691 - Building materials
213
174 - Occupational ethics
198
535 - Light & infrared & ultraviolet phenomena
189
611 - Human anatomy, cytology & histology
188
401 - Philosophy & theory
173
940 - History of Europe
173
720 - Architecture
172
514 - Topology
170
509 - Historical, geographic & persons treatment
162
410 - Linguistics
159
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