Congdon, R. J. <br/><br/>
Introduction to appropriate technology  : towar a simpler life style 

 - Emmaus, Pa. :  Rodale Press,  1977 
 - 205 p.  : ilus. 
<br/><br/><label>LCCN: </label>26534 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tecnología.
<br/><br/><label>Dewey Class. No.: </label>600  / C6