Carnap, Rudolf,  1891-1970. <br/><br/>
Meaning and necessity :  a study in semantics and modal logic / 
by Rudolf Carnap. 
 - 2d ed., enl. 
 - Chicago, Ill. :  University of Chicago Press,  1956. 
 - viii, 258 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Semantics (Philosophy)<br/>Logic, Symbolic and mathematical