R.R.Bowker Company <br/><br/>
Ulrich's International Periodicals Directory. Vol. 1 

 - Ed. 14 
 - New York  R.R.Bowker Copany  1971 
 - 1009 
<br/><br/>R.R.Bowker Company: Ulrich's International Periodicals Directory. Vol. 1.  (Ed. 14)  New York.  R.R.Bowker Copany, 1971.--(050UIPD)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>50  / UIPD