Bennett, William M. <br/><br/>
Horizonte Usa ;   No. 13 

 - Washington-XXU :   U.S. Information Agency,   1976. 
 - p. 76  
 - Bimestral 
 - No. 13(1976) 
 - Horizonte Usa ;   No. 13 .
 - U.S. Information Agency. .