Ilrich's International directory including irregular serialsand annuals. 189-90. 28 th ed. 

 - 28 th ed. 
 - New York  R.R. Bowker.  1989 
 - 3 V. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Periodicals.
<br/><br/><label>Dewey Class. No.: </label>R 050.25 Ulr 28 th ed.