History 22,865 Congresses 9,254 Conference papers and proceedings 6,159 Electronic books 3,916 Sources 2,864 Criticism, interpretation, etc 2,779 Biography 2,713 Periodicals 2,220 Biographies 1,649 Controversial literature 1,530 Early works to 1800 1,373 Bibliography 878 Church history 868 Exhibitions 857 Radio news programs 761 Apologetic works 753 Early works 714 Academic theses 678 Exhibition catalogs 573 Thèses et écrits académiques 541 Congrès 517 Fiction 484 Interviews 467 Comparative studies 441 Bibliographies 426 Aufsatzsammlung 410 Dictionaries 401 Military history 386 Apologetic writings 381 Treaties 374 Festschriften 373 Correspondence 370 Pictorial works 285 Academic Dissertation 281 Documentary films 275 dissertations 272 Catalogs 264 Conference papers and proceedings 256 Case studies 248 Drama 221 Traités 216 DVD-Video discs 201 Miscellanea 196 Autobiographies 195 Personal narratives 195 Actes de congrès 191 Personal correspondence 191 doctoral dissertations 191 masters theses 191 theses 191 Legislative hearings 183 Sermons 172 Video recordings 172 Kongress 165 Commentaries 153 Feature films 153 Records and correspondence 142 Directories 128 Nonfiction films 128 Diaries 126 Chronology 124 Essays 119 Congrès 118 Videotapes 116 Internet videos 115 Trivia and miscellanea 111 Electronic book 96 Ouvrages avant 1800 94 Naval history 92 Papal documents 91 Texts 91 Archives 90 proceedings (reports) 88 Hochschulschrift 86 Chronologies 83 Facsimiles 82 Translations 82 Addresses, essays, lectures 81 Congress 80 Konferenzschrift 78 Poetry 77 Expositions 76 Statistics 76 Novels 75 Printed ephemera 75 Encyclopedias 71 Ouvrages de controverse 71 Conference proceedings 69 Congresses (form) 69 Art 68 Caricatures and cartoons 68 Quelle 64 Textbooks 63 Illustrated works 61 Anecdotes 59 In art 58 Maps 58 Handbooks, manuals, etc 57 Cross-cultural studies 56 Informational works 55