Copi, Irving M <br/><br/>
Symbolic logic 

 - 5th Ed. 
 - New Delhi:  Prentice Hall of India;  1979. 
 - 398p. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>8120309707 
<br/><br/><label>Dewey Class. No.: </label>160  / COP/S