Libro 6,105 Government Document 456 Seriadas 444 Thesis 334 Revista 302 Electrónico 171 Unknown 144 Conference Proceeding 114 Conxunto 105 Mapa 43 Manuscrito 23 Capítulo de libro 7 Fotografía 6 Audio 4 Artigo 2 Reference Material 1 ver todos ...

H - Social Science 3,145 T - Technology 811 D - World History 161 F - General American History 136 C - Historical Sciences 90 G - Geography, Anthropology, Recreation 65 N - Fine Arts 61 A - General Works 54 L - Education 43 Q - Science 31 Z - Library Science 31 K - Law 30 U - Military Science 30 P - Language and Literature 27 J - Political Science 23 M - Music 21 E - United States History 18 V - Naval Science 12 B - Philosophy, Psychology, Religion 11 S - Agriculture 10 R - Medicine 6 ver todos ...

Huan, Kuan, active 1st century B.C 87 American Iron and Steel Institute 75 Statistical Office of the European Communities 74 International Labour Office 73 France Chambre des députés 69 International Labour Organisation Iron and Steel Committee 65 Swank, James Moore, 1832-1914 58 United States Bureau of Foreign and Domestic Commerce 53 European Coal and Steel Community High Authority 47 United States Bureau of Mines 47 American Iron and Steel Association 43 Iron and Steel Institute 38 United States International Trade Commission 37 United States Congress 34 United States Bureau of the Census 33 United Nations Economic Commission for Europe 32 British Iron and Steel Federation 29 France Chambre des pairs 28 Uppsala universitet 28 Geological Survey (U.S.) 27 France Chambre des de��pute��s 26 Organisation for Economic Co-operation and Development 25 United States Congress. Senate. Committee on Finance 24 Berch, Krister, 1730-1792 23 Commission of the European Communities 23 British Steel Corporation 22 United States National Park Service 22 United Nations Industrial Development Organization 21 Moreau, Thomas, Desnoeux 20 International Labour Organisation Sectoral Activities Programme 19 ver todos ...

English 4,005 German 874 French 840 Russian 308 Japanese 307 Chinese 250 Spanish 218 Swedish 202 Italian 142 Portuguese 75 Dutch 43 Polish 43 Danish 42 Multiple 34 Czech 29 Turkish 28 Arabic 22 Korean 22 Hebrew 14 Latin 13 Ukrainian 11 Undetermined 11 Norwegian 9 Finnish 8 Greek 8 Indonesian 7 Slovak 6 Catalan 5 Hungarian 5 Slovenian 4 ver todos ...

History 881 Periodicals 513 Statistics 317 Electronic books 266 Early works to 1800 152 Biography 114 Congresses 106 Academic theses 98 Catalogs 79 Conference papers and proceedings 79 Thèses et écrits académiques 78 Early works 69 Directories 65 Biographies 61 Sources 50 Maps 43 Trade catalogs 43 dissertations 41 Printed ephemera 40 Academic Dissertation 39 Case studies 38 doctoral dissertations 37 masters theses 37 theses 37 Pictorial works 34 Legislative materials 32 Bibliography 30 Broadsides 27 Account books 26 Hochschulschrift 24 ver todos ...

19th century 141 20th century 118 18th century 110 Early works to 1800 69 active 1st century B.C 45 1900-1999 41 1800-1899 36 1700-1799 34 17th century 33 To 1500 26 221 B.C.-220 A.D 19 1800-1999 16 Colonial period, ca. 1600-1775 16 1900 - 1999 14 Revolution, 1775-1783 13 1671-1730 12 1700-1899 12 1800 - 1899 12 1918-1945 12 1716-1793 10 1st cent. B.C 10 Civil War, 1861-1865 10 Han dynasty, 202 B.C.-220 A.D 10 1600-1699 8 1700 - 1799 8 1839-1937 8 1844-1926 8 1848-1926 8 1914-1918 8 16th century 7 ver todos ...

United States 1,060 France 581 Great Britain 572 Germany 481 China 346 Japan 285 Pennsylvania 274 Sweden 227 Europe 218 England 184 Soviet Union 165 Canada 137 European Economic Community countries 125 India 118 Italy 103 Russia (Federation) 95 Brazil 92 Russia 79 New York (State) 74 Spain 72 Germany (West) 68 Austria 67 Massachusetts 57 Belgium 51 Lorraine 50 Alabama 44 Poland 42 Virginia 42 Mexico 38 Ural Mountains Region 38 ver todos ...