LIPSCHUTZ SEYMOUR THEORY AND PROBLEMS SET THEORY AND RELATED TOPICS 530 SOLVED PROBLEMS - 0 - NEW YORK-U.S.A. SCHAUM PUBLISHING 1964 - 233 pag 28 cm - 0 0 . ELEMENTARY-RELATIONS/RELATED-TOPICS Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 530.41 / L546