History 12,327 Congresses 10,211 Conference papers and proceedings 7,047 Periodicals 6,072 Electronic books 5,705 Bibliography 3,180 Criticism, interpretation, etc 3,166 Biography 2,225 Bibliographies 1,298 Biographies 1,240 Sources 1,174 Case studies 1,159 Exhibitions 909 Statistics 903 Catalogs 896 Dictionaries 698 Interviews 676 Church history 617 Internet videos 617 Exhibition catalogs 607 Early works to 1800 598 Directories 583 Fiction 518 Electronic journals 513 Sound recordings 510 Popular music 403 Early works 402 Pictorial works 396 Congrès 389 Essays 340 Maps 326 Educational films 322 Early accounts to 1600 279 Classification 257 Aufsatzsammlung 251 Documentary films 249 Indexes 208 Songs 205 Conference papers and proceedings 198 Congress 195 Streaming audio 188 Academic theses 183 Festschriften 179 Drama 175 Music 175 Video recordings 172 Poetry 165 Handbooks, manuals, etc 163 Périodiques 163 Actes de congrès 156 Feature films 154 Correspondence 149 Périodiques 145 Encyclopedias 140 Cross-cultural studies 136 Thèses et écrits académiques 129 Anecdotes 128 reference 128 referencia 128 référence bibliographique 128 Legislative hearings 127 bibliography 123 bibliographie 118 bibliografía 117 Downloadable audio file 108 Textbooks 105 Nonfiction films 104 Electronic book 103 Periodical 103 Facsimiles 101 In art 101 Scores 100 Études de cas 99 Guidebooks 98 CD-ROMs 95 Poster 95 Congrès 89 Handbooks and manuals 89 Folklore 87 Juvenile literature 87 Autobiographies 84 DVD-Video discs 83 Databases 83 Military history 83 Expositions 79 proceedings (reports) 77 Diaries 76 Imprints 76 Readers 76 Translations 76 Oral histories (literary works) 75 Bio-bibliography 74 dissertations 73 Novels 71 graph 71 graphique 71 gráfico 71 Illustrated works 70 Oral histories 70 Juvenile works 67