Heggiek, Ian G, ed. <br/><br/>
Modal choice and the value of travel time 

 - Oxford  Clarendon press  1976 
 - viii, 190p.; 22cm. 
<br/><br/><label>ISBN: </label>198284047 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business air travel<br/>Commuter travel time<br/>Transportation<br/>Travel time