TY  - BOOK
AU  - Kuratowski,Kazimierz
AU  - Boron,Leo F.
TI  - Introduction to set theory and topology 
U1  - 517.521 KUR  
PY  - 1961///.
CY  - Oxford : 
PB  - Pergamon Press, 
KW  - Set theory
KW  - Topology
N1  - Includes index.
ER  -