Electronic books 5,887 History 1,850 Electronic book 551 Criticism, interpretation, etc 384 Congresses 324 Case studies 286 Conference papers and proceedings 255 Biography 212 Educational films 190 Documentary films 186 Internet videos 167 Periodicals 163 Videorecording 147 Biographies 121 Cross-cultural studies 107 Interviews 48 Documentary television programs 42 Television news programs 42 Congress 33 Feature films 32 Instructional films 31 Sources 30 Personal narratives 27 Aufsatzsammlung 25 Livres électronique 24 Nonfiction films 24 Encyclopedias 23 Military history 22 Film excerpts 20 Livres électroniques 20 Popular works 19 Short films 18 Film clips 17 Correspondence 13 Livres numériques 12 Anecdotes 11 Drama 11 Statistics 11 Filmed interviews 10 Filmed lectures 10 Longitudinal studies 10 Documentary 9 Humor 9 Miscellanea 9 Personal correspondence 9 Pictorial works 9 Trials, litigation, etc 9 Church history 8 Computer network resources 8 Folklore 8 Music 8 Juvenile literature 7 Academic theses 6 Ethnographic films 6 Exhibitions 6 Festschriften 6 Filmed panel discussions 6 Geschiedenis (vorm) 6 Handbooks and manuals 6 Handbooks, manuals, etc 6 Local history 6 Textbooks 6 videorecording 6 Art 5 Bibliography 5 Diaries 5 Dictionaries 5 Educational television programs 5 Fiction films 5 Nonfiction television programs 5 Personal Narrative 5 Terminology 5 Translations 5 Biographical films 4 Blogs 4 Case Reports 4 Cases 4 Environmental films 4 Exhibition catalogs 4 Fiction 4 Forecasts 4 Rules 4 Songs and music 4 Television mini-series 4 Anthologies 3 Art and the war 3 Bibliographies 3 Chronology 3 Classification 3 Comic books, strips, etc 3 Congressen (vorm) 3 Early works to 1800 3 Environmental television programs 3 Essays 3 Independent films 3 Juvenile fiction 3 Lectures 3 Maps 3 Personal narratives, British 3 Personal narratives, German 3