TY  - BOOK
AU  - Bourbaki,N.
TI  - Theory of sets 
T2  - Elements of mathematics
SN  - 978340225256
PY  - 2004///
CY  - Berlin
PB  - Springer
KW  - Set theory
KW  - associative property
KW  - cardinals
KW  - Equivalence
N1  - Includes bibliographical references and indexes
ER  -