Statistics 65,603 Periodicals 33,890 Electronic books 3,081 Census data 1,970 Statistiques 1,964 Census 1,795 History 1,792 Congresses 1,635 Bibliography 1,514 Databases 1,186 Conference papers and proceedings 1,174 Census, 1990 1,026 Maps 785 Handbooks, manuals, etc 779 Directories 755 Statistics, Vital 699 Bibliographies 529 Statistics, Medical 512 Periodical 496 Vital statistics 496 Handbooks and manuals 456 Tables 431 CD-ROMs 425 Internet videos 384 Catalogs 364 Dictionaries 358 Medical 356 Academic theses 353 Vital 351 Problems, exercises, etc 349 Périodiques 344 Census, 1980 339 Charts, diagrams, etc 308 Government publications 261 Sources 240 Medical statistics 237 Indexes 223 Textbooks 223 Census, 1991 215 Case studies 214 Electronic journals 193 statistics 186 Census, 1981 176 Congress 153 Classification 151 Problems and exercises 142 periodicals 142 Périodiques 138 Yearbooks 137 Early works to 1800 122 Instructional films 116 Longitudinal studies 111 Biography 104 Tables (Data) 100 Serial publications 98 Educational films 97 Abstracts 92 Reference works 91 Computer network resources 90 Census, 1970 89 Software 89 Census, 2000 85 Cross-cultural studies 83 Registers 73 cuadros estadísticos 72 statistical table 72 tableau statistique 72 Atlases 71 Electronic book 69 Early works 68 Thèses et écrits académiques 68 Census, 1971 65 Handbook 64 Rules and practice 64 Surveys 64 Encyclopedias 62 Graphs 62 Terminology 60 Internet resource 59 bibliography 58 Statistik 57 Gazetteers 55 Geographic information systems data 55 Geospatial data 54 Registers (Lists) 54 bibliografía 54 bibliographie 54 Guides et manuels 50 Facsimiles 49 Programmed instruction 48 graph 47 graphique 47 gráfico 47 Biographies 46 Festschriften 46 Congrès 45 Outlines, syllabi, etc 44 reference 44 referencia 44 référence bibliographique 44