Prehoda, Robert W. <br/><br/>
Your next fifty years 
/ Robert W. Prehoda,...foreword by J. E. Pournelle 
. - New York  : Ace books, 1980
. - XIII-348p.  : Ill.  ; 21CM. 
 - Ace science fiction .
<br/><br/>Index 
<br/><br/><label>Universal Decimal Class. No.: </label>167.8