On the evolution of urban transportation planning theory and technique in the United States / 
Robert Earl Heightchew. 
 - College Park :  University of Maryland,  1981. 
 - 238 p. :  ill. ;  21 cm. 
<br/><br/>Thesis (Ph.D.) - University of Maryland, 1981. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Urban transportation--United States--Planning.<br/>Transportation planning--United States.