U.N.E.P <br/><br/>
Environmental guidelines for rural roads 
U.N.E.P 
 - Nairobi  U.N.E.P  1986 
 - x, 15p, ; 
<br/><br/>
<br/><br/><label>ISSN: </label>9280711466 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NUST
<br/><br/><label>Dewey Class. No.: </label>388.4  / RUR