Tripp,Elker. <br/><br/>
Road traffic and its controle 
Tripp,Elker. 
 - London  Edward ARNOLD & Co.  1950 
 - xv, 30623 p, :  ill, :  20 cm 
<br/><br/>
<br/><br/><label>Dewey Class. No.: </label>388.312  / TRI