Helmer, Olaf <br/><br/>
Social technology / 
Olaf Helmer 
 - New York :  Basic Books,  1966 
 - 108 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label> USD 5.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology
<br/><br/><label>Dewey Class. No.: </label>300.18