Classification
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150 - Psychology
823
340 - Law
815
618 - Gynecology, obstetrics, pediatrics & geriatrics
782
158 - Applied psychology
781
614 - Incidence & prevention of disease
779
541 - Physical chemistry
738
550 - Earth sciences
738
690 - Buildings
716
630 - Agriculture & related technologies
698
303 - Social processes
661
516 - Geometry
658
580 - Plants (Botany)
633
664 - Food technology
626
500 - Natural sciences & mathematics
624
547 - Organic chemistry
589
539 - Modern physics
580
641 - Food & drink
521
418 - Standard usage & applied linguistics
511
341 - Law of nations
507
025 - Library operations
499
511 - General principles of mathematics
477
523 - Specific celestial bodies & phenomena
475
155 - Differential & developmental psychology
464
339 - Macroeconomics & related topics
463
307 - Communities
450
628 - Sanitary & municipal engineering
429
364 - Criminology
402
809 - History, description & criticism
401
378 - Higher education
383
336 - Public finance
380
344 - Labor, social, education & cultural law
377
362 - Social welfare problems & services
375
531 - Classical mechanics; solid mechanics
373
543 - Analytical chemistry
371
174 - Occupational ethics
367
337 - International economics
349
930 - History of ancient world to ca. 499
347
576 - Genetics & evolution
343
631 - Techniques, equipment & materials
343
170 - Ethics
312
581 - Specific topics in natural history
300
501 - Philosophy & theory
299
346 - Private law
282
691 - Building materials
267
537 - Electricity & electronics
265
791 - Public performances
253
070 - News media, journalism & publishing
225
351 - Public administration
225
379 - Public policy issues in education
220
535 - Light & infrared & ultraviolet phenomena
218
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