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232 mosi London, sue mcneil, susanne trimbath
Shatz, H. J., Kitchens, K. E., Rosenbloom, S., Wachs, M. (2011), Highway Infra- structure and the Economy: Implications for Federal Policy, Retrieved June 29, 2011, from Research and Developement (RAND) Coporation: http://www. rand.org/pubs/monographs/MG1049.html
U.S. Chamber of Commerce (2011), Tranportation Performance Index: 2011 Com- plete Technical Report Update, Retrieved August 3, 2011, from http://www. uschamber.com/sites/default/files/TPI_2011%20Update%20Technical%20 Report.pdf