TY  - BOOK
AU  - L E Sigler
AU  - L E Sigler
TI  - Exercises in set theory,
T2  - Springer International Student Edition
SN  - 3540780211
U1  - 512.817 SIG 
PY  - 1966///
CY  - Princeton, N.J.
PB  - :Van Nostrand 
KW  - Mathematics
KW  - ;Set theory -- Problems, exercises, etc
ER  -