Ulrich's international periodicals directory 1989-90:  now including irregular serials and annuals/ 
compiled by R.R. Bowker. 
 - 28th edition 
 - New York  R.R. Bowker  c1989 
 - lv,1846p. 
<br/><br/><label>ISBN: </label>0835227324 9780835227322 
<br/><br/><label>Dewey Class. No.: </label>016.05