Book 5,014 Government Document 1,002 Serial 358 Electronic 347 Conference Proceeding 120 Thesis 73 Journal 52 Unknown 48 Book Chapter 6 Kit 2 Manuscript 1 Map 1 Physical Object 1 Reference Material 1 see all ...

United States Federal Highway Administration 202 United States Bureau of Public Roads 186 United States Congress. House. Committee on Roads and Canals 94 United States Congress. House. Committee on Public Works 88 Asian Development Bank 67 United States Congress. House. Committee on Public Works. Subcommittee on Roads 67 United States Congress. Senate. Committee on Public Works. Subcommittee on Public Roads 56 United States General Accounting Office 53 United States Congress. Senate. Committee on Public Works 52 New York (State) Department of Public Works 50 United States Department of Transportation 42 United States Congress. Senate. Committee on Post Offices and Post Roads 36 United States Congress. House. Committee on Interior and Insular Affairs 35 United States Congress. House. Committee on Public Works. Special Subcommittee on the Federal-Aid Highway Program 35 National Research Council (U.S.) Transportation Research Board 33 Automotive Safety Foundation 31 Great Britain 28 New York (State) Dept. of Public Works 28 United States Public Roads Administration 28 American Association of State Highway and Transportation Officials 27 National Highway Users Conference 25 United States Congress. House. Committee on Public Works and Transportation. Subcommittee on Surface Transportation 24 National Cooperative Highway Research Program 23 Massachusetts Department of Public Works 21 Organisation for Economic Co-operation and Development 21 United States Congress. House. Committee on Public Works and Transportation 21 National Research Council (U.S.) Highway Research Board 20 United States Congress. Senate. Committee on Public Works. Subcommittee on Roads 20 Wilbur Smith and Associates 19 New Hampshire Department of Transportation 18 see all ...

English 4,041 Spanish 274 Chinese 264 French 259 German 156 Japanese 120 Italian 88 Portuguese 64 Russian 51 Indonesian 37 Korean 30 Turkish 25 Arabic 16 Dutch 14 Finnish 14 Persian 11 Swedish 10 Greek 9 Polish 9 Hebrew 7 Thai 7 Czech 6 Norwegian 5 Bengali 4 Hindi 4 Multiple 4 Vietnamese 4 Catalan 3 Croatian 3 Danish 3 see all ...

History 655 Periodicals 314 Congresses 141 Statistics 141 Electronic books 106 Conference papers and proceedings 99 Pictorial works 51 Case studies 48 Early works to 1800 45 Legislative hearings 41 Maps 34 Early works 32 Sources 30 Academic theses 27 Guidebooks 25 Thèses et écrits académiques 22 Illustrated works 20 Technical reports 19 Audiences législatives 17 Annual reports 16 Handbooks, manuals, etc 15 Printed ephemera 15 Academic Dissertation 14 Documentary films 12 Government publications 12 Handbooks and manuals 12 Local history 12 Bibliography 11 Exhibitions 10 Serial publications 10 see all ...

20th century 88 19th century 60 18th century 49 1900-1999 39 To 1500 38 1800-1899 20 21st century 18 1700-1799 17 Early works to 1800 15 1900 - 1999 12 17th century 11 Charles I, 1625-1649 11 1540-1810 9 1700-1899 8 2000-2099 8 Spanish colony, 1540-1810 8 1800 - 1899 7 20e siècle 7 1600-1868 6 19e siècle 6 2000- 6 To 1185 6 1800-1999 5 1945- 5 1700 - 1799 4 1700 - 1899 4 1937-1945 4 Since 2000 4 1066-1485 3 1185-1600 3 see all ...