Periodicals 17,174 Electronic books 12,252 Statistics 11,540 History 6,867 Legislative hearings 3,450 Congresses 3,132 Conference papers and proceedings 2,276 Early works to 1800 2,200 Case studies 1,459 Dictionaries 1,348 Legislative materials 1,306 Handbooks, manuals, etc 1,256 Directories 1,197 Early works 1,080 Government publications 972 Sources 960 Academic theses 929 Broadsides 725 Bibliography 715 Handbooks and manuals 686 Thèses et écrits académiques 666 Rules and practice 653 Pamphlets 640 Electronic journals 574 Rules 483 Internet videos 439 Biography 404 dissertations 371 doctoral dissertations 341 theses 341 masters theses 340 Trials, litigation, etc 336 Printed ephemera 314 Academic Dissertation 289 Statutes and codes 262 Biographies 259 Bibliographies 258 Posters 225 Databases 219 Périodiques 219 Cases 193 Périodiques 192 Legislative histories 186 Hochschulschrift 183 Speeches in Congress 177 Serial publications 173 Interviews 168 Statistiques 164 Electronic book 154 Educational films 148 Video recordings 139 Problems, exercises, etc 137 Computer network resources 136 Tables 129 Congress 128 Congrès 119 Catalogs 118 Television news programs 118 Periodical 117 Correspondence 116 Documentary films 116 Annual reports 110 Speeches 110 Technical reports 110 Fiction 106 Congressional addresses 103 Terminology 102 Church history 100 Newspapers 98 Aufsatzsammlung 97 Records and correspondence 95 Blank forms 92 Congrès 92 Encyclopedias 91 Maps 90 Indexes 89 Tracts (literary works) 88 Problems and exercises 86 Textbooks 86 Electronic government information 84 Study guides 81 Études de cas 80 Account books 79 Downloadable audio book 79 Festschriften 79 Pictorial works 79 Streaming audio 79 Guides et manuels 75 periodicals 74 reference 74 referencia 74 référence bibliographique 74 Treaties 72 Trial and arbitral proceedings 72 Annotations (Provenance) 67 Guides, manuels, etc 67 bibliography 67 Dictionnaires 65 bibliografía 65 bibliographie 65