Appropriate technology problems and promises 

 - Paris  Development centre of the organisation  1976 
 - 344p. 
<br/><br/><label>ISBN: </label>9264114920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Appropriate Technological
<br/><br/><label>Dewey Class. No.: </label>607.2 APP