TY  - BOOK
AU  - Bell,John L
AU  - Slomsom,Alan
TI  - Models and ultraproducts: an introduction 
SN  - 0720420547
U1  - 518.766 
PY  - 1971///
CY  - Amsterdam
PB  - North-Holland Publishing Company
KW  - LOGICA
KW  - MODELOS
KW  - ALGEBRA BOLEANA
ER  -