600 - Technology 10,974 005 - Computer programming, programs & data 6,137 330 - Economics 5,995 620 - Engineering & allied operations 4,723 658 - General management 4,404 610 - Medicine & health 4,102 more ... 621 - Applied physics 3,888 006 - Special computer methods 3,847 004 - Data processing & computer science 3,609 629 - Other branches of engineering 3,253 616 - Diseases 2,640 500 - Natural sciences & mathematics 1,977 003 - Systems 1,764 000 - Computer science, information & general works 1,698 331 - Labor economics 1,621 333 - Economics of land & energy 1,533 700 - The arts; fine & decorative arts 1,323 363 - Other social problems & services 1,316 571 - Physiology & related subjects 1,222 300 - Social sciences 1,132 320 - Political science 1,021 570 - Life sciences; biology 980 519 - Probabilities & applied mathematics 958 650 - Management & auxiliary services 956 900 - History & geography 949 670 - Manufacturing 880 515 - Analysis 781 612 - Human physiology 769 580 - Plants (Botany) 760 745 - Decorative arts 754 338 - Production 743 380 - Commerce, communications & transportation 640 530 - Physics 637 657 - Accounting 602 551 - Geology, hydrology & meteorology 593 302 - Social interaction 591 572 - Biochemistry 587 384 - Communications; telecommunication 578 630 - Agriculture & related technologies 500 615 - Pharmacology & therapeutics 490 660 - Chemical engineering 482 332 - Financial economics 480 577 - Ecology 479 340 - Law 474 617 - Surgery & related medical specialties 474 001 - Knowledge 446 576 - Genetics & evolution 389 140 - Specific philosophical schools 370 370 - Education 335 540 - Chemistry & allied sciences 326 304 - Factors affecting social behavior 324 579 - Microorganisms, fungi & algae 318 770 - Photography, photographs & computer art 303 364 - Criminology 302 664 - Food technology 286 374 - Adult education 275 624 - Civil engineering 270 381 - Commerce 269 541 - Physical chemistry 266 100 - Philosophy & psychology 258 510 - Mathematics 246 628 - Sanitary & municipal engineering 244 613 - Personal health & safety 236 614 - Incidence & prevention of disease 232 641 - Food & drink 229 518 - Numerical analysis 215 158 - Applied psychology 210 581 - Specific topics in natural history 210 153 - Mental processes & intelligence 205 794 - Indoor games of skill 182 301 - Sociology & anthropology 172 618 - Gynecology, obstetrics, pediatrics & geriatrics 167 303 - Social processes 159 531 - Classical mechanics; solid mechanics 159 306 - Culture & institutions 143 690 - Buildings 143 771 - Techniques, equipment & materials 142 547 - Organic chemistry 135 362 - Social welfare problems & services 134 150 - Psychology 133 720 - Architecture 130 511 - General principles of mathematics 129 539 - Modern physics 128 910 - Geography & travel 125 590 - Animals (Zoology) 124 550 - Earth sciences 120 327 - International relations 115 155 - Differential & developmental psychology 112 170 - Ethics 109 800 - Literature & rhetoric 103 543 - Analytical chemistry 102 368 - Insurance 100 339 - Macroeconomics & related topics 97 361 - Social problems & social welfare in general 93 634 - Orchards, fruits & forestry 92 025 - Library operations 88 336 - Public finance 87 520 - Astronomy & allied sciences 87 341 - Law of nations 86 371 - Schools & their activities; special education 85 see all ... less ...

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