Konyndyk, Kenneth <br/><br/>
Introductory modal logic 
By Kenneth Konyndyk 
 - Indiana:  University of Notre Dame Press  1986 
 - x, 133p.: ill. 
<br/><br/><label>ISBN: </label>9780268024079 
<br/><br/><label>LC Class. No.: </label>BC 199.M6 Kon