TY  - BOOK
AU  - Zeman, J. Jay
AU  - 
TI  - Modal logic: the Lewis modal systems
U1  - 510.67 
PY  - 1973///
CY  - Oxford
PB  - Clarendon Press
KW  - Mathematics
KW  - Number theory
KW  - Set theory
KW  - Group theory
KW  - Mathematical sciences
KW  - Pure mathematics
KW  - Fundamentals of mathematics
ER  -