TY  - GEN
AU  - Lipschutz , Seymour
TI  - Schaum's outline of theory and problems of set theory and related topics: including 530 solved problems
SN  - 0070990131
U1  - 511.322 
PY  - 1998///
CY  - Singapore
PB  - McGraw Hill
KW  - MATHEMATICS
ER  -