01756oam 2200433I 450 991070344670332120160113130549.0(CKB)5470000002431237(OCoLC)934532404(OCoLC)995470000002431237(EXLCZ)99547000000243123720160112d2015 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierCovered bridges and the birth of American engineering /editors Justine Christianson [and three others] ; authors James Barker [and seven others]Washington, DC :National Park Service, Historic American Engineering Record,2015.1 online resource (234 pages) color illustrationsTitle from title screen (viewed Jan. 12, 2016)."This study is conducted under a joint agreement between the Federal Highway Administration -- Turner Fairbank Highway Research Center, and the National Park Service -- Historic American Engineering Record (HAER)."0-578-17106-6 Includes biblioraphical references and index.Covered bridgesUnited StatesHistoryEngineeringUnited StatesHistoryCovered bridgesHistory.EngineeringHistory.Barker J. C(James C.),1945-Christianson JustineHistoric American Engineering Record,Turner-Fairbank Highway Research Center,GPOGPOGPOBOOK9910703446703321Covered bridges and the birth of American engineering3092830UNINA