BETZ Mathew J  etc. Ed. <br/><br/>
Appropriate technology   Choice and development 

 - Durham  Duke Press Policy Studies     1984 
 - 164p.  cm. 
 - Duke press policy studies   Oth .
<br/><br/><label>ISBN: </label>0822305739   
<br/><br/><label>Standard No.: </label>9,808 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X(F):275.1(Y:4).N83, M4