Statistics 31,794 Census data 6,455 History 5,223 Maps 4,455 Periodicals 3,792 Census 3,224 Census, 1990 3,030 Congresses 2,635 Census, 1980 1,891 Conference papers and proceedings 1,820 Statistics, Vital 1,667 Electronic books 1,421 Census, 2000 1,302 Census, 20th, 1980 1,137 Databases 937 Vital statistics 882 Bibliography 871 Sources 804 Statistiques 762 Census, 2010 756 Academic theses 644 Census, 2001 555 Census, 1981 478 Census, 1991 478 Census, 1970 460 Internet videos 433 Census, 19th, 1970 419 Vital 409 CD-ROMs 379 Bibliographies 321 Thematic maps 284 Educational films 283 Case studies 271 Congress 249 Census, 2011 247 Thèses et écrits académiques 247 Early works to 1800 239 Handbooks, manuals, etc 227 Atlases 221 Census, 1971 220 Census, 1960 207 Census, 1982 206 Genealogy 188 Periodical 187 Census, 1998 172 Census, 1940 164 Census, 22nd, 2000 154 Census, 2005 151 Catalogs 142 Reference works 136 Census, 1986 133 dissertations 133 Dictionaries 129 Statistics, Medical 129 Census, 1961 128 Biography 125 Census, 2002 125 Directories 125 doctoral dissertations 125 masters theses 125 theses 125 reference 123 referencia 123 référence bibliographique 123 Tables 120 Academic Dissertation 119 Handbooks and manuals 118 Early works 117 Census, 18th, 1960 112 Census, 1996 106 Geospatial data 106 Conference papers and proceedings 105 Facsimiles 103 bibliography 98 Census, 1950 95 Census, 2006 95 bibliographie 92 bibliografía 91 Government publications 89 Geographic information systems data 88 Périodiques 86 Indexes 85 Données de recensement 83 Census, 1975 81 Electronic journals 78 Census, 1995 76 census records 75 graph 75 graphique 75 gráfico 75 Census, 1930 73 Congrès 72 Documentary films 72 Registers 70 Biographies 66 Census, 1985 65 Census, 2009 63 Census, 1993 60 Charts, diagrams, etc 59 Statistiques démographiques 59