Czyt.Czas. 299,356 299,391 ULRICH Ulrich's international periodicals directory 1990-91 : now including irregular serials and annuals. - 29th ed. - New York : R. R. Bowker, Division of Reed Publ. USA Inc., [1990]. - 3 vol. ; 28 cm + Ulrich's user's guide : 36 s. (The Bowker International serials Database, ISSN 0000-0175) ISBN 08352-2985-3 (3 vol. set) Vol. 1 : Subjects A - G. - I V, 2008 s. ISBN 0352-2986-6 Vol. 2 : Subjects H - Z. - LV, 2009-3946 s. ISBN 0-8352-2987-4 Vol. 3 : Indexes. . IX, S. 3947-5640 ISBN 0-8352-2988-2