Ulrich's international periodicals directory / R R Bowker Company - 22nd ed. - New York: R R Bowker Company, 1983 - 1058p. - A bowker serials bibliography . Vol.1 (A-M) Subjects--Topical Terms: Information science Subjects--Index Terms: Periodicals Universal Decimal Class. No.: R 05(058.7) / M3.1;1