Irregular Serials & Annuals :  an international directory : a classified guide to current foreign and domestic serials, excepting periodicals issued more frequently than once a year. 
 Irregular Serials and Annuals 

 - New York :  R.R. Bowker Company,  1967-1987. 
 -  28 cm. 
 - Niereg. 
 - Ed. 1 (1967)-Ed. 13 (1987/1988). 
<br/><br/><label>ISSN: </label>0000-0043 
 = Irregular Serials & annuals 
<br/><br/><label>Tematy--Hasło przedmiotowe ogólne (rzeczowe): </label><br/>Wydawnictwa ciągłe--spisy.
<br/><br/><label>Tematy--Hasło formalne: </label><br/>Informatory.