Ulrich's international periodicals directory.   

 - 1st ed. 1973 - 1974. 
 - New York :   R.R. Bowker Company ,   1973 
 -   ill. ;    21 cm. 
 - A Bowker serials Bibliography   .
<br/><br/><label>ISBN: </label>0835206505 
<br/><br/><label>National Library of Medicine Call No.: </label>Z671   /  Ul9i 1973