Webster, F V <br/><br/>
Traffic signals 

 - London:   Her Majsty's Stattionary Office,   1966 
 - vii, 111p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business Management
<br/><br/><label>Subjects--Index Terms: </label>Traffic 
<br/><br/><label>Universal Decimal Class. No.: </label>656.057  / K6