A guide for drivers of heavy goods vehicles :  version for driving on the left / 
United National Economic Commission for Africa. 
 - U.K. :  Transport and road Research Laboratory,  1990 
 - viii, 104 p. ;  21 cm. 
<br/><br/>Includes index. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Road--Safety measures.<br/>Traffic safety.