Electronic books 3,978 History 2,250 Biography 559 Periodicals 550 Documentary films 466 Electronic book 352 Biographies 332 Case studies 236 Educational films 214 Congresses 185 Internet videos 159 Videorecording 135 Conference papers and proceedings 133 Interviews 128 Documentary television programs 116 Criticism, interpretation, etc 115 Feature films 115 Drama 95 Nonfiction films 82 Statistics 79 Sources 77 Television news programs 73 Fiction 67 Short films 61 Cross-cultural studies 41 Film clips 41 Filmed interviews 37 Pictorial works 37 Fiction films 29 Personal narratives 28 Filmed speeches 26 Anecdotes 25 Correspondence 24 Livres numériques 24 Military history 24 Juvenile literature 23 Documentary 22 Diaries 21 Livres électronique 18 Nonfiction television programs 18 Encyclopedias 17 Ethnographic films 16 Personal correspondence 16 Autobiographies 15 Television mini-series 14 Aufsatzsammlung 13 Church history 13 Unedited footage 13 videorecording 13 Local history 12 Television adaptations 12 Messages 11 Bibliography 10 Fiction television programs 10 Longitudinal studies 10 Maps 10 Personal narratives, American 9 Environmental films 8 Essays 8 Livres électroniques 8 Poetry 8 Trials, litigation, etc 8 Biographical films 7 Film excerpts 7 Panel discussions 7 Romance television programs 7 microform 7 Comic books, strips, etc 6 Congress 6 Folklore 6 Television interviews 6 Book reviews 5 Humor 5 Personal narratives, British 5 Personal narratives, German 5 Academic theses 4 American 4 Domestic fiction 4 Filmed performances 4 German 4 Guidebooks 4 Historical fiction 4 Juvenile fiction 4 Miscellanea 4 Naval history 4 Psychological fiction 4 Translations into English 4 Bibliographies 3 Computer network resources 3 Congressen (vorm) 3 Early works 3 Early works to 1800 3 Festschriften 3 Film adaptations 3 Lectures 3 Life skills guides 3 Love stories 3 Made-for-TV movies 3 Online-Publikation 3 Portraits 3