Assessing the future and policy planning 
edited by Walter A. Hahn and Kenneth F. Gordon 
 - New York  Gordon and Breach Science  1973 
 - vi, 344p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Future --Policy planning
<br/><br/><label>Dewey Class. No.: </label>YA6 H124