R.R.Bowker,   .  <br/><br/>
Ulrich`s International Periodicals Dictionary.1977-1978 / R.R.Bowker. 

 - 17th ed /  
 -  New York : R.R.Bowker Company ,   1977 
 - 2096 
<br/><br/><label>Dewey Class. No.: </label> / R.R