Economics at the wheel : the costs of cars and drivers /Author: Porter, Richard C.
Publisher: San Diego : Academic Press,
Date: c1999. This title can be found in 7 Iowa libraries.
Opportunities to improve air quality through transportation pricing programs /Publisher: [Washington, D.C.?] : U.S. Environmental Protection Agency, Air and Radiation,
Date: [1997] This title can be found in 2 Iowa libraries.
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