Libro 50.505 Atti del Convegno 8.281 Elettronico 3.184 Documento governativo 1.775 Periodico 1.512 Periodico 904 Tesi 504 Sconosciuto 287 Manoscritto 18 Materiale di riferimento 15 Multimedia 13 Quotidiano 8 Mappa 7 Fotografia 3 Articolo 2 Capitolo di libro 2 Reg. sonora musicale 1 Musica a stampa 1 vedi tutto ...

T - Tecnologia 53.625

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English 47.144 German 2.511 Russian 1.618 French 1.446 Chinese 470 Italian 386 Spanish 351 Japanese 324 Polish 129 Dutch 124 Arabic 81 Portuguese 79 Indonesian 69 Latin 65 Swedish 54 Czech 51 Turkish 51 Romanian 47 Korean 41 Undetermined 39 Multiple 37 Ukrainian 32 Hungarian 30 Greek 22 Vietnamese 22 Croatian 21 Danish 17 Bulgarian 14 Finnish 14 Thai 14 vedi tutto ...

Congresses 9.713 Conference papers and proceedings 7.353 Electronic books 6.982 Periodicals 1.972 Handbooks, manuals, etc 1.395 History 1.158 Handbooks and manuals 1.058 Technical reports 1.001 Congrès 603 Dictionaries 421 Catalogs 414 Early works to 1800 290 Electronic journals 264 Biography 252 Statistics 242 Pictorial works 234 Early works 218 Tables 203 Juvenile literature 185 Biographies 164 Guides, manuels, etc 160 Directories 144 Problems, exercises, etc 144 Early works to 1850 131 Academic theses 111 Bibliography 110 Popular works 108 Périodiques 108 Electronic book 105 Guides et manuels 103 vedi tutto ...

20th century 94 Early works to 1800 87 19th century 69 1452-1519 59 Early works to 1850 55 1781-1848 32 21st century 28 1736-1819 27 1900-1999 23 17th century 22 Geschichte 22 To 1500 21 18th century 20 1800-1899 17 1728-1809 16 1858-1913 16 16th century 15 2000-2099 13 1693-1756 12 1800-1999 12 1663-1729 11 1771-1833 10 1910-1974 10 1729-1766 9 1803-1859 9 15th century 8 1808-1890 8 1829-1905 8 1876-1941 8 1661-1751 7 vedi tutto ...

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