Ulrich's international periodicals directory  : a classified guide to current periodicals, foreign and domestic, 1979 
/ 80 
 - 18 ed. 
 - New York :  Bowker,  1979 
 - 2156 p. 
<br/><br/><label>LCCN: </label>44744 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Publicaciones periódicas--Directorios.
<br/><br/><label>Dewey Class. No.: </label>050.25  / U5 1979-80