Classification
prev ...
613 - Personal health & safety
813
340 - Law
803
614 - Incidence & prevention of disease
781
618 - Gynecology, obstetrics, pediatrics & geriatrics
775
158 - Applied psychology
765
150 - Psychology
758
550 - Earth sciences
729
541 - Physical chemistry
724
690 - Buildings
702
630 - Agriculture & related technologies
693
516 - Geometry
649
580 - Plants (Botany)
621
500 - Natural sciences & mathematics
616
664 - Food technology
614
547 - Organic chemistry
587
539 - Modern physics
577
641 - Food & drink
513
025 - Library operations
497
511 - General principles of mathematics
475
303 - Social processes
472
523 - Specific celestial bodies & phenomena
471
155 - Differential & developmental psychology
461
339 - Macroeconomics & related topics
458
307 - Communities
448
341 - Law of nations
446
628 - Sanitary & municipal engineering
411
364 - Criminology
385
336 - Public finance
380
531 - Classical mechanics; solid mechanics
380
378 - Higher education
373
344 - Labor, social, education & cultural law
372
418 - Standard usage & applied linguistics
367
809 - History, description & criticism
367
543 - Analytical chemistry
364
174 - Occupational ethics
358
337 - International economics
347
576 - Genetics & evolution
340
631 - Techniques, equipment & materials
339
930 - History of ancient world to ca. 499
336
362 - Social welfare problems & services
320
170 - Ethics
309
581 - Specific topics in natural history
297
501 - Philosophy & theory
291
346 - Private law
281
061 - Organizations in North America
269
537 - Electricity & electronics
262
691 - Building materials
257
062 - Organizations in British Isles; in England
236
070 - News media, journalism & publishing
220
351 - Public administration
217
more ...