Toffler, Alvin. <br/><br/>
Powershift :  knowledge, wealth, and violence at the edge the 21st century 

 - New York, Estados Unidos de América :  Bantam Books,   1991 
 - 611p. 
<br/><br/><label>ISBN: </label>0-553-18052-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGIA / EL FUTURO (FUTUROLOGIA)
<br/><br/><label>Dewey Class. No.: </label>303.49  / 819