Directory of institutions and individuals active in environmentally sound and appropriate technologies 

 - NewYork  Pergamon press  1979 
 - xvii, 152p. 
<br/><br/><label>ISBN: </label>0080256589 
<br/><br/><label>Subjects--Index Terms: </label>Directory 
<br/><br/><label>Dewey Class. No.: </label>658.05  / UNE