Electronic books 931 History 240 Documentary films 98 Television news programs 79 Criticism, interpretation, etc 73 Electronic book 72 Congresses 64 Conference papers and proceedings 54 Biography 53 Internet videos 52 Documentary television programs 45 Case studies 37 Fiction 35 Biographies 31 Juvenile fiction 28 Educational films 23 Drama 16 Videorecording 16 Juvenile literature 15 Nonfiction television programs 15 Poetry 14 Encyclopedias 11 Feature films 10 Pictorial works 10 Nature television programs 9 Aufsatzsammlung 8 Maps 8 Military history 8 Cross-cultural studies 7 Music 7 Sources 7 Statistics 7 Wildlife television programs 7 Bibliography 6 Early works to 1800 6 Folklore 6 Short films 6 Action and adventure fiction 5 Early works 5 Fiction films 5 Periodicals 5 Adventure fiction 4 Church history 4 Exhibitions 4 Filmed interviews 4 Filmed performances 4 Nonfiction films 4 Television interviews 4 Anecdotes 3 Autobiographies 3 Dictionaries 3 Festschriften 3 Field guides 3 Identification 3 Kongress 3 Livres électroniques 3 Personal narratives, American 3 cartographic material 3 videorecording 3 Academic theses 2 Adventure stories 2 Bibliographies 2 Catalogs 2 Computer network resources 2 Essays 2 Fantasy fiction 2 Guidebooks 2 Handbooks, manuals, etc 2 Interviews 2 Juvenile poetry 2 Juvenile works 2 Literary collections 2 Novels 2 Panel discussions 2 Popular music 2 Songs and music 2 Streaming videos 2 Textbooks 2 sound recording 2 Adaptations 1 Annotations (Provenance) 1 Anthologie 1 Art 1 Atlas 1 Atlases 1 Bio-bibliography 1 Biografie 1 Biographical films 1 Chronology 1 Classification 1 Collections 1 Concert films 1 Congress 1 Correspondence 1 Diaries 1 Documentary 1 Encyclopedieën (vorm) 1 Exhibition catalogs 1 Film excerpts 1 Filmed dance 1