Halmos, Paul Richard,  1914- <br/><br/>
Naive set theory / 
P . R. Halmos. 
 - Princeton, N.J.:  Van Nostrand,  [1960]. 
 - 104 p.;  24 cm. 
 - The University series in undergraduate mathematics. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Set theory<br/>Arithmetic--Foundations.
<br/><br/><label>Dewey Class. No.: </label>512.817