Abstract sets and finite ordinals : an introduction to the study of set theory /
G.B. Keene.
- Dover ed.
- Mineola, N.Y. : Dover Publications, 2007.
- vi, 106 p. : ill. ; 22 cm.
Originally published: Oxford ; New York : Pergamon Press, 1961.
Includes bibliographical references (p. 103) and index.