Electronic books 576 History 158 Periodicals 156 Congresses 139 Criticism, interpretation, etc 82 Internet videos 59 Educational films 58 Videorecording 54 Case studies 52 Conference papers and proceedings 44 Electronic book 44 Biography 35 Statistics 20 Documentary films 15 Biographies 11 Dictionaries 11 Bibliography 10 Sources 9 Aufsatzsammlung 7 Church history 7 Cross-cultural studies 7 sound recording 7 Civilization 6 Encyclopedias 6 Interviews 6 Early works to 1800 5 Instructional films 5 Sound recordings 5 Fiction 4 Readers 4 Anecdotes 3 Congresos 3 Early accounts to 1600 3 Early works 3 Handbooks, manuals, etc 3 Literary collections 3 Maps 3 Outlines, syllabi, etc 3 Television news programs 3 Translations into English 3 Art music 2 Bibliographies 2 Bio-bibliography 2 Biographical films 2 Classification 2 Correspondence 2 Diaries 2 Directories 2 Documentary television programs 2 Field guides 2 Identification 2 Indexes 2 Instructional television programs 2 Juvenile fiction 2 Libros electrónicos 2 Music 2 Pictorial works 2 Poetry 2 Political fiction 2 Sea stories 2 Textbooks 2 Textbooks for foreign speakers 2 Travelogues (Television programs) 2 microform 2 Bildband 1 Biographie 1 Book reviews 1 Centennial celebrations, etc 1 Comic books, strips, etc 1 Comparative studies 1 Computer network resources 1 Concertos 1 Conferencias 1 Congress 1 Dance music 1 Documentary 1 Essay 1 Essays 1 Excerpts 1 Feature films 1 Filmed panel discussions 1 Filmed performances 1 Filmed speeches 1 Folklore 1 Forecasts 1 Guidebooks 1 Historical reenactments (Motion pictures) 1 Imprints 1 Instrumental settings 1 Juvenile 1 Juvenile literature 1 Local history 1 Messages 1 Miscellanea 1 Naval history 1 Nonfiction films 1 Norteño (Music) 1 Overtures 1 Personal correspondence 1 Popular music 1