Bulfin, Robert L <br/><br/>
Appropriate technology for natural resources development:  An overview, annotated bibliography and a guide to sources of information 

 - Tucson:   The University of Arizona,   1977 
 - 166p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources
<br/><br/><label>Universal Decimal Class. No.: </label>D 03(026):6.001  / L7