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Main topic classifications Main topic classifications Main topic classifications 42 C Academic disciplines Academic disciplines 33 C Main topic classifications->Academic disciplines Main topic classifications Humanities Humanities 41 C Main topic classifications->Humanities Main topic classifications Philosophy Philosophy 19 C Main topic classifications->Philosophy Main topic classifications Science Science 37 C Main topic classifications->Science Main topic classifications Business Business 34 C Main topic classifications->Business Main topic classifications Communication Communication 30 C Main topic classifications->Communication Main topic classifications Mass media Mass media 45 C Main topic classifications->Mass media Main topic classifications Culture Culture 47 C Main topic classifications->Culture Main topic classifications Food and drink Food and drink 44 C Main topic classifications->Food and drink Main topic classifications Language Language 31 C Main topic classifications->Language Main topic classifications Economy Economy 22 C Main topic classifications->Economy Main topic classifications Education Education 47 C Main topic classifications->Education Main topic classifications Energy Energy 34 C Main topic classifications->Energy Main topic classifications Engineering Engineering 18 C Main topic classifications->Engineering Main topic classifications Entertainment Entertainment 50 C Main topic classifications->Entertainment Main topic classifications Entities Entities 5 C Main topic classifications->Entities Main topic classifications Ethics Ethics 28 C Main topic classifications->Ethics Main topic classifications Events Events 36 C Main topic classifications->Events Main topic classifications Geography Geography 38 C Main topic classifications->Geography Main topic classifications Government Government 72 C Main topic classifications->Government Main topic classifications Health Health 42 C Main topic classifications->Health Main topic classifications History History 33 C Main topic classifications->History Main topic classifications Human behavior Human behavior 39 C Main topic classifications->Human behavior Main topic classifications Politics Politics 39 C Main topic classifications->Politics Main topic classifications Information Information 29 C Main topic classifications->Information Main topic classifications Knowledge Knowledge 28 C Main topic classifications->Knowledge Main topic classifications Law Law 43 C Main topic classifications->Law Main topic classifications Life Life 17 C Main topic classifications->Life Main topic classifications Main topic articles Main topic articles 0 C Main topic classifications->Main topic articles Main topic classifications Military Military 41 C Main topic classifications->Military Main topic classifications Music Music 49 C Main topic classifications->Music Main topic classifications Nature Nature 23 C Main topic classifications->Nature Main topic classifications Universe Universe 4 C Main topic classifications->Universe Main topic classifications People People 35 C Main topic classifications->People Main topic classifications Religion Religion 34 C Main topic classifications->Religion Main topic classifications Society Society 54 C Main topic classifications->Society Main topic classifications Sports Sports 52 C Main topic classifications->Sports Main topic classifications Technology Technology 36 C Main topic classifications->Technology Main topic classifications Time Time 41 C Main topic classifications->Time Main topic classifications Art history Art history 29 C Academic disciplines->Art history Academic disciplines Campanology Campanology 3 C Academic disciplines->Campanology Academic disciplines Communication studies Communication studies 9 C Academic disciplines->Communication studies Academic disciplines Education by subject Education by subject 62 C Academic disciplines->Education by subject Academic disciplines Environmental studies Environmental studies 10 C Academic disciplines->Environmental studies Academic disciplines Academic disciplines->Humanities Academic disciplines Jurisprudence Jurisprudence 9 C Academic disciplines->Jurisprudence Academic disciplines Musicology Musicology 20 C Academic disciplines->Musicology Academic disciplines Natural sciences Natural sciences 5 C Academic disciplines->Natural sciences Academic disciplines Academic disciplines->Philosophy Academic disciplines Religious studies Religious studies 24 C Academic disciplines->Religious studies Academic disciplines Academic disciplines->Science Academic disciplines Scientific disciplines Scientific disciplines 4 C Academic disciplines->Scientific disciplines Academic disciplines Social sciences Social sciences 49 C Academic disciplines->Social sciences Academic disciplines Humanities->Art history Humanities Humanities->Campanology Humanities Humanities->Jurisprudence Humanities Humanities->Philosophy Humanities Humanities->Religious studies Humanities Cultural studies Cultural studies 35 C Humanities->Cultural studies Humanities The arts The arts 33 C Humanities->The arts Humanities Humanities->Entertainment Humanities Comedy Comedy 31 C Humanities->Comedy Humanities Drama Drama 27 C Humanities->Drama Humanities Satire Satire 10 C Humanities->Satire Humanities Tragedies (dramas) Tragedies (dramas) 2 C Humanities->Tragedies (dramas) Humanities Humanities->History Humanities Linguistics Linguistics 32 C Humanities->Linguistics Humanities Media studies Media studies 10 C Humanities->Media studies Humanities Humanities->Politics Humanities Philosophy and society Philosophy and society 9 C Philosophy->Philosophy and society Philosophy Science->Scientific disciplines Science Natural history Natural history 7 C Science->Natural history Science Science and technology Science and technology 10 C Science->Science and technology Science Science in society Science in society 20 C Science->Science in society Science Time in science Time in science 2 C Science->Time in science Science Communication->Communication studies Communication Communication theory Communication theory 4 C Communication->Communication theory Communication Communications and media organizations Communications and media organizations 14 C Communication->Communications and media organizations Communication Deception Deception 43 C Communication->Deception Communication Journalism Journalism 31 C Communication->Journalism Communication Communication->Mass media Communication Media sharing Media sharing 3 C Communication->Media sharing Communication Teaching Teaching 7 C Communication->Teaching Communication Mass media->Communications and media organizations Mass media Mass media->Media sharing Mass media Mass media and entertainment controversies Mass media and entertainment controversies 29 C Mass media->Mass media and entertainment controversies Mass media Media law Media law 4 C Mass media->Media law Mass media Mass media->Media studies Mass media Artificial objects Artificial objects 24 C Culture->Artificial objects Culture Cultural events Cultural events 16 C Culture->Cultural events Culture Culture->Cultural studies Culture Culture->Food and drink Culture Culture->Language Culture Ritual Ritual 8 C Culture->Ritual Culture Culture->The arts Culture Language->Linguistics Language Statements Statements 16 C Language->Statements Language Economy->Business Economy Education->Education by subject Education Education->Teaching Education Education and health Education and health 2 C Education->Education and health Education Entertainment->Mass media Entertainment Entertainment->Comedy Entertainment Entertainment->Drama Entertainment Event management Event management 2 C Entertainment->Event management Entertainment Information by telephone Information by telephone 3 C Entertainment->Information by telephone Entertainment Entertainment->Mass media and entertainment controversies Entertainment Entertainment->Media law Entertainment Entertainment->Satire Entertainment Special (entertainment) Special (entertainment) 6 C Entertainment->Special (entertainment) Entertainment Entertainment->Tragedies (dramas) Entertainment Trivia Trivia 2 C Entertainment->Trivia Entertainment Organizations Organizations 33 C Entities->Organizations Entities Systems Systems 11 C Entities->Systems Entities Applied ethics Applied ethics 18 C Ethics->Applied ethics Ethics Events->Cultural events Events Events->Event management Events Events->Special (entertainment) Events News News 3 C Events->News Events Social events Social events 11 C Events->Social events Events Geography->Environmental studies Geography Geographic data and information Geographic data and information 20 C Geography->Geographic data and information Geography Government commissions Government commissions 9 C Government->Government commissions Government Government information Government information 11 C Government->Government information Government Public law Public law 16 C Government->Public law Government Public policy Public policy 29 C Government->Public policy Government Time in government Time in government 11 C Government->Time in government Government Veto Veto 1 C Government->Veto Government Health->Education and health Health Death Death 40 C Health->Death Health Health and military Health and military 5 C Health->Health and military Health Health and sports Health and sports 5 C Health->Health and sports Health Chronology Chronology 23 C History->Chronology History Human behavior->Communication theory Human behavior Human behavior->Deception Human behavior Human behavior->Ritual Human behavior Human behavior->Applied ethics Human behavior People by behavior People by behavior 40 C Human behavior->People by behavior Human behavior Violence Violence 43 C Human behavior->Violence Human behavior Politics->Veto Politics Policy Policy 16 C Politics->Policy Politics Social issues Social issues 40 C Politics->Social issues Politics Information->Communication Information Information->Journalism Information Information->Information by telephone Information Information->News Information Information->Geographic data and information Information Information->Government information Information Reference Reference 8 C Information->Reference Information Information->Statements Information Knowledge->Science Knowledge Knowledge->Trivia Knowledge Knowledge->Information Knowledge Knowledge->Reference Knowledge Law->Jurisprudence Law Law->Government commissions Law Law->Public law Law Life->Death Life Military->Health and military Military Music->Campanology Music Music->Musicology Music Nature->Natural sciences Nature Nature->Energy Nature Nature->Life Nature Matter Matter 13 C Nature->Matter Nature Nature->Natural history Nature Nature and religion Nature and religion 18 C Nature->Nature and religion Nature Nature->Universe Nature Universe->Energy Universe Universe->Matter Universe People->People by behavior People Religion->Nature and religion Religion Religion and society Religion and society 51 C Religion->Religion and society Religion Time in religion Time in religion 9 C Religion->Time in religion Religion Society->Humanities Society Society->Social sciences Society Society->Communication Society Society->Economy Society Society->Organizations Society Society->Systems Society Society->Social events Society Society->Public policy Society Society->Violence Society Society->Philosophy and society Society Society->Policy Society Society->Social issues Society Society->Religion and society Society Society->Science in society Society Technology in society Technology in society 18 C Society->Technology in society Society Sports->Health and sports Sports Technology->Artificial objects Technology Technology->Engineering Technology Technology->Science and technology Technology Technology->Technology in society Technology Time->Events Time Time->Time in government Time Time->Chronology Time Time->Time in religion Time Time->Time in science Time