Yuster, Leigh Carol. Ulrich`s international periodicals directory 1988-1989 / compiled by R R Bowker company and edited by Leigh Carol Yuster. - 27th ed / . - New York : R R Bowker , 1988. - v.2(liv,1691-3376p.) : ills.photo ; 29cm . H - Z H - Z NULL ISBN: 0835225666 NULL Subjects--Index Terms: PERIODICALS-DIRECTORIES Dewey Class. No.: 011.3405 / YUS/U