Electronic books 2,430 Instructional television programs 883 Instructional films 648 Nonfiction television programs 371 Educational films 324 History 264 Internet videos 249 Congresses 223 Periodicals 185 Electronic book 174 Conference papers and proceedings 152 Case studies 137 Filmed interviews 129 Documentary films 121 Videorecording 113 Documentary television programs 112 Problems, exercises, etc 84 Criticism, interpretation, etc 73 Handbooks, manuals, etc 73 Biography 67 Textbooks 61 Bibliography 51 Interviews 49 Handbooks and manuals 40 Films for foreign speakers 37 Cross-cultural studies 35 Filmed lectures 35 Science films 34 Short films 34 Nonfiction films 33 Biographies 32 Study guides 31 Children's films 28 Problems and exercises 27 Textbooks for foreign speakers 23 Aufsatzsammlung 22 Films for English speakers 19 Examinations 18 Reading materials 18 Bibliographies 17 Examinations, questions, etc 17 Problems, excercices, etc 17 Television interviews 17 Juvenile literature 15 Streaming video 13 Outlines, syllabi, etc 12 Educational television programs 11 Self-instruction 11 Sources 11 for foreign speakers 11 Criticism and interpretation 10 Livres électronique 10 Reality-based 10 Streaming videos 10 Commentaries 9 Dance films 9 Dictionaries 9 Educational 9 Filmed dance 9 Instructional 9 Livres électroniques 9 Miscellanea 9 Personal narratives 9 for English speakers 9 Congress 8 Directories 8 Terminology 8 Computer network resources 7 Documentary 7 Readers 7 Conversation and phrase books 6 Popular works 6 sound recording 6 videorecording 6 Filmed performances 5 Introductions 5 Television news programs 5 kit 5 Catalogs 4 Comparative studies 4 Encyclopedias 4 Feature films 4 Historical reenactments (Television programs) 4 Kongress 4 Livres numériques 4 Methods (Music) 4 Puppet television programs 4 Software 4 Televised performances 4 Trials, litigation, etc 4 microform 4 Atlases 3 Congressen (vorm) 3 Drama 3 Early works 3 Equipment and kits 3 Festschriften 3 Folklore 3 Makers Lab 3 Outlines and syllabi 3