United Nations Centre for Human Settlements (Habitat) <br/><br/>
Cooperation in the african region on technologies and standards for local building materials   
  

 - 
 - Nairobi  1990 
 - 35 p.   
 -   .
<br/><br/>    ----    
<br/><br/>  
<br/><br/><label>ISBN: </label>92-1-131104-7 ,  ,   
<br/><br/><label>Universal Decimal Class. No.: </label>