Hughes, G E. <br/><br/>
A new introduction to modal logic /  
G. E. Hughes and M. J. Cresswell. 
 - /   . 
 - London :   Routledge ,   2005. 
 - x, 421p. :   illus.,figs.,tables ;   23cm .  
<br/><br/>Includes bibliography & index 
<br/><br/><label>ISBN: </label>0415126002  GBP20.99 
<br/><br/><label>Subjects--Index Terms: </label>LOGIC 
<br/><br/><label>Dewey Class. No.: </label>160  / HUG/N