Periodicals 17,171 Electronic books 12,257 Statistics 11,541 History 6,855 Legislative hearings 3,447 Congresses 3,131 Conference papers and proceedings 2,280 Early works to 1800 2,201 Case studies 1,462 Dictionaries 1,347 Legislative materials 1,305 Handbooks, manuals, etc 1,256 Directories 1,195 Early works 1,080 Government publications 971 Sources 957 Academic theses 924 Broadsides 724 Bibliography 715 Handbooks and manuals 685 Thèses et écrits académiques 660 Rules and practice 653 Pamphlets 640 Rules 483 Electronic journals 445 Internet videos 439 Biography 402 dissertations 365 doctoral dissertations 341 theses 341 masters theses 340 Trials, litigation, etc 336 Printed ephemera 314 Academic Dissertation 289 Statutes and codes 261 Biographies 258 Bibliographies 255 Posters 224 Databases 218 Périodiques 213 Périodiques 199 Cases 193 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 118 Catalogs 117 Periodical 117 Correspondence 116 Documentary films 116 Television news programs 116 Technical reports 110 Speeches 109 Annual reports 107 Fiction 106 Congressional addresses 103 Terminology 101 Church history 100 Newspapers 98 Aufsatzsammlung 97 Records and correspondence 95 Congrès 93 Blank forms 92 Encyclopedias 91 Maps 90 Indexes 88 Problems and exercises 86 Textbooks 86 Tracts (literary works) 85 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 reference 74 referencia 74 référence bibliographique 74 Treaties 72 Trial and arbitral proceedings 72 periodicals 72 Guides, manuels, etc 67 bibliography 67 Annotations (Provenance) 66 Dictionnaires 65 bibliografía 65 bibliographie 65