History 17,190 Congresses 14,550 Electronic books 11,911 Periodicals 11,636 Conference papers and proceedings 9,906 Internet videos 6,685 Criticism, interpretation, etc 5,104 Bibliography 4,817 Textbooks 3,810 Biography 3,717 Handbooks, manuals, etc 2,659 Early works to 1800 2,570 Educational films 2,412 Instructional television programs 2,230 Directories 2,220 Biographies 2,071 Bibliographies 2,038 Textbooks for foreign speakers 1,947 Handbooks and manuals 1,648 Video recordings 1,552 Case studies 1,505 Instructional films 1,326 Juvenile literature 1,303 Electronic journals 1,285 Sources 1,261 Readers 1,113 Dictionaries 1,085 Problems, exercises, etc 1,078 Interviews 1,071 Catalogs 1,048 Outlines, syllabi, etc 1,040 Early works 1,031 Academic theses 985 DVD-Video discs 968 Statistics 942 Nonfiction television programs 899 Festschriften 778 Exhibitions 722 for foreign speakers 709 Thèses et écrits académiques 704 Readers (Publications) 694 Problems and exercises 659 Commentaries 657 Congrès 619 Documentary films 604 Outlines and syllabi 566 Conversation and phrase books 565 Videotapes 555 Aufsatzsammlung 552 Juvenile works 552 Posters 550 Congress 546 Audiocassettes 539 Examinations, questions, etc 525 Correspondence 511 Exhibition catalogs 488 Essays 474 Examinations 441 Photographs 440 Lecture notes 428 Périodiques 427 for English speakers 424 Cross-cultural studies 423 Fiction 417 Périodiques 392 Lectures 366 Curricula 360 dissertations 359 Academic Dissertation 357 Drama 356 Designs and plans 349 Texts 349 Self-instruction 344 CD-ROMs 342 Pictorial works 333 Short films 323 Introductions 318 Documentary television programs 316 Terminology 309 doctoral dissertations 307 masters theses 307 theses 307 Streaming videos 303 Class notes 293 Specimens 293 Nonfiction films 287 Printed ephemera 282 Periodical 280 Actes de congrès 275 Oral histories 274 Study guides 264 Conference papers and proceedings 261 Congrès 257 Compact discs 255 Autobiographies 254 Indexes 237 Glossaries, vocabularies, etc 233 Sound recordings 231 Promotional films 222 Government publications 217