Electronic books 4,121 History 2,057 Periodicals 550 Biography 538 Documentary films 438 Electronic book 411 Biographies 310 Case studies 239 Educational films 223 Congresses 182 Internet videos 170 Videorecording 141 Conference papers and proceedings 131 Interviews 121 Criticism, interpretation, etc 112 Documentary television programs 112 Feature films 110 Drama 94 Statistics 78 Sources 75 Nonfiction films 71 Television news programs 70 Fiction 66 Short films 58 Cross-cultural studies 41 Film clips 41 Filmed interviews 37 Pictorial works 34 Fiction films 30 Personal narratives 27 Filmed speeches 26 Anecdotes 23 Correspondence 22 Documentary 22 Juvenile literature 22 Diaries 19 Livres électronique 18 Livres numériques 18 Military history 18 Nonfiction television programs 18 Encyclopedias 17 Personal correspondence 15 Aufsatzsammlung 13 Church history 13 videorecording 13 Autobiographies 12 Ethnographic films 12 Television adaptations 12 Unedited footage 12 Longitudinal studies 11 Messages 11 Bibliography 10 Fiction television programs 10 Local history 10 Maps 9 Personal narratives, American 9 Poetry 8 Television mini-series 8 Trials, litigation, etc 8 Environmental films 7 Essays 7 Film excerpts 7 Livres électroniques 7 Panel discussions 7 Romance television programs 7 microform 7 Biographical films 6 Folklore 6 Academic theses 5 Book reviews 5 Comic books, strips, etc 5 Congress 5 Humor 5 Personal narratives, German 5 Television interviews 5 Translations into English 5 American 4 German 4 Guidebooks 4 Juvenile fiction 4 Miscellanea 4 Bibliographies 3 Computer network resources 3 Congressen (vorm) 3 Domestic fiction 3 Early works 3 Early works to 1800 3 Festschriften 3 Film adaptations 3 Filmed performances 3 Historical fiction 3 Life skills guides 3 Love stories 3 Made-for-TV movies 3 Naval history 3 Online-Publikation 3 Portraits 3 Psychological fiction 3 Reference works 3 Television programs 3