TY  - BOOK
AU  - Halmos, Paul R.
AU  - Kelly, John L.
AU  - Halmos, Paul R.
AU  -  KELLY John L Ed.
TI  - Naive set theory
T2  - University series in undergraduate mathematics
PY  - 1960///
CY  - Princeton
PB  - D Van Nostrand Co.       
KW  - Set theory
KW  - Arithmetic--Foundations
ER  -