La U.R.S.S a cincuenta anos de su revolución 
editado por Harrison E. Salisbury y otros. 
 - Barcelona  Editorial AHR  1969. 
 - 384 p. 
<br/><br/> "The New York times team reports."  Translation of: The Soviet Union: the fifty years.  Includes index. 
<br/><br/><label>LCCN: </label>bvc00000348 //r923 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Soviet Union.--Social conditions.<br/>Soviet Union.--Intellectual life.
<br/><br/><label>LC Class. No.: </label>DK266  / .S578 1969 
<br/><br/><label>Dewey Class. No.: </label>914.7/03/84