TY  - BOOK
AU  - Hintikka,Jaakko
TI  - Models for modalities
AV  - BC199.M6H55 
PY  - 1969///
CY  - Dordrecht
PB  - D. Reidel Pub. Co.
KW  - Modality (Logic)
N1  - Includes bibliographical references
ER  -