Vassiliev, M. and Gouschev, S., ed. <br/><br/>
Life in the twenty - first century   

 - Harmondsworth  Penguin  1961 
 - 222p. 
 - A Penguin special    S 195 .
<br/><br/> "Tr. by H. E. Crowcroft and R. J. Wason"   
<br/><br/><label>Dewey Class. No.: </label>303.4830905  / V339.LT