An introduction to modal logic /G. E. Hughes [and] M. J. Cresswell.
Hughes, G. E. 1918-,
An introduction to modal logic /G. E. Hughes [and] M. J. Cresswell. - London : Methuen, (c)1968 (1977 printing)] - x, 388 pages 22 cm. - University paperbacks 431 .
"Distributed in the U.S.A. by Barnes and Noble, Inc."
72183219 //r86
B***
Modality (Logic)
BC199 / .I587 1972
An introduction to modal logic /G. E. Hughes [and] M. J. Cresswell. - London : Methuen, (c)1968 (1977 printing)] - x, 388 pages 22 cm. - University paperbacks 431 .
"Distributed in the U.S.A. by Barnes and Noble, Inc."
72183219 //r86
B***
Modality (Logic)
BC199 / .I587 1972