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(2005) An Investigation of User Costs and Benefits of Winter Road Closures, June 2005. Transportation, Department of
(2008) Flex Fueled Vehicles Registered in Iowa. Transportation, Department of
(2011) Flexible fuel vehicle registration report, February 1, 2011. Transportation, Department of
(2011) Fuel Adjustment, April 2011. Transportation, Department of
(2011) Fuel Adjustment, May 2011. Transportation, Department of
