TY  - BOOK
AU  - Adamson, Iain.
TI  - A set theory workbook
SN  - 3764340282
U1  - 511.322 
PY  - 1998///
CY  - USA: 
PB  - Birkhauser , 
KW  - Arithmetic
KW  - Equivalence relations
KW  - Math
KW  - Natural numbers
ER  -