A south Asian experience on appropriate research & development  national engineering research & development centre (NERD) Sri Lanka 

 - Colombo  Regional environmental & Natural Resources Information Centre  1991 
 - 38 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RESEARCH
<br/><br/><label>Dewey Class. No.: </label>48  / LDC