Ingram, Gregory K. <br/><br/>
Vehicles, roads, and road use: alternative empirical specifications 
by Gregory K. Ingram and Zhi Liu 
 - Washington, D.C.  World Bank  1998 
 - 34p. 
 - Policy research working paper 2036 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Income<br/>Roads<br/>Transportation, Automotive<br/>Automobile ownership