Helmer, Olaf <br/><br/>
Looking forward: a guide to futures research 
by Olaf Helmer 
 - Beverly Hills  Sage  1983 
 - 376p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research methods.<br/>Futurology
<br/><br/><label>Dewey Class. No.: </label>B19 H369