Ulrich's International Periodicals Directory 1992-93 / Vol. I Subjects (A-H) Publisher: R.R. Bowker - 31st ed. - New Providence ; New Jersey : A Reed Reference Publishing Company, 1992. - 2520 p. - The Bowker International Serials Database . with appendix ISBN: 0-8352-3265-4(v. 1) Subjects--Topical Terms: Periodical DirectoryDirectory