Report of a survey of traffic on the federal-aid highway systems of eleven western states, 1930. 
By the Bureau of Public Roads, United States Department of Agriculture, and the Highway Departments of Arizona, California, Colorado, Idaho, Nebraska, New Mexico, Nevada, Oregon, Utah, Washington, and Wyoming. 
 - Washington,  U.S. Govt. Print. Off.,  1932. 
 - ii, 85 p.  illus., diagrs., maps (13 fold. in pocket)  29 cm. 
<br/><br/><label>LCCN: </label>agr32000586  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--United States.<br/>Transportation.
<br/><br/><label>LC Class. No.: </label>HE355.A3  / A5 1930