Ulrich, Carolyn Farquahar Ulrich's international periodicals directory : A classified guide to a selected list of current periodicals, foreign and domestic : 1st annual suppl. / Edited by Marietta Chicorel. - 11th ed. - New York ; London : R. R. Bowker Co, 1966. - xi,99 p. Subjects--Topical Terms: Periodical Directory