Jensen, Axel Martin <br/><br/>
Protection of roads in Mauritania against sand encroachment :    a report prepared for UNSO /  
Axel Martin Jensen 
 - New York :    UN Publication,    1993 
 - ii, 42 p. :    ill., maps ;    28 cm. 
<br/><br/>Includes bibliographical references (p.B!- B5) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Highway planning
<br/><br/><label>Dewey Class. No.: </label>625.74