Electronic books 1,777 History 319 Congresses 189 Conference papers and proceedings 142 Electronic book 135 Case studies 94 Educational films 93 Documentary films 81 Internet videos 81 Videorecording 70 Television news programs 68 Nonfiction films 33 Statistics 28 Documentary television programs 27 Congress 24 Criticism, interpretation, etc 21 Cross-cultural studies 18 Biography 17 Biographies 11 Aufsatzsammlung 10 Interviews 10 Short films 9 Environmental films 8 Feature films 8 Academic theses 6 Handbooks, manuals, etc 5 Livres électronique 5 Livres électroniques 5 Panel discussions 5 Congressen (vorm) 4 Documentary 4 Film clips 4 Military history 4 Patents 4 Cases 3 Drama 3 Instructional films 3 Longitudinal studies 3 Periodicals 3 Trials, litigation, etc 3 Animated films 2 Computer network resources 2 Congresos 2 Directories 2 Encyclopedias 2 Environmental television programs 2 Festschriften 2 Filmed interviews 2 Filmed lectures 2 Handbooks and manuals 2 Livre électronique (Descripteur de forme) 2 Livres numériques 2 Newsreels 2 Nonfiction television programs 2 Popular works 2 Ressource Internet (Descripteur de forme) 2 Science television programs 2 Streaming video 2 Television interviews 2 Television program clips 2 Unedited footage 2 Anecdotes 1 Bibliographies 1 Bibliography 1 Biographical films 1 Case Reports 1 Census, 1860 1 Church history 1 Claims 1 Cost effectiveness 1 Dystopias 1 Encyclopedieën (vorm) 1 Essays 1 Exhibition catalogs 1 Exhibitions 1 Experimental films 1 Fiction 1 Fiction films 1 Fiction television programs 1 Field guides 1 Film adaptations 1 Film excerpts 1 Forecasts 1 Gelegenheidsuitgaven (vorm) 1 Genealogy 1 Geschiedenis (vorm) 1 Gothic fiction 1 Historical films 1 Identification 1 Interactive videos 1 Interviews (vorm) 1 Lectures 1 Lehrbuch 1 Love stories 1 Made-for-TV movies 1 Methods (Music) 1 Naval history 1 Nurses Instruction 1 Ok Tedi Region 1 Personal narratives, American 1