Locklin, D. Philip <br/><br/>
Economics of transportation/ 
by D. Philip Locklin. 
 - 7th ed. 
 - Homewood:  R. D. Irwin,  1972. 
 - xi, 913 p. : 
<br/><br/><label>ISBN: </label>MBS7119 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation---United States.
<br/><br/><label>Dewey Class. No.: </label>385  / Ec, 7