Carnap, Rudolf 1891-1970.
Meaning and necessity: a study in semantics and modal logic /
Rudolf Carnap 
. - Chicago : London : University of Chicago Press,  1967 
. - viii, 258 p.  20 cm. 
 - (Phoenix books  ; P30 )
<br/>К.: Бібліогр. : c. 251-253, Index