Fraenkel, Abraham Adolf, 1891-1965 Foundations of set theory/ Abraham A. Fraenkel and Yehoshua Bar-Hillel. - 2d rev. ed. - Amsterdam ;: North-Holland, 1973. - x, 404 p.: illus., 24 cm. - Studies in logic and the foundations of mathematics; v. 67. . Bibliography: p. [346]-390. Subjects--Topical Terms: Set theory.Mathematics---Philosophy. Dewey Class. No.: 511.322 / F799f