Copi Irving M <br/><br/>
Introduction to logic 
Irving M Copi; Carl Cohen 
 - 9th ed. 
 - New Delhi :   Prentice Hall of India,   c2002. 
 - XIX, 729 p. :   graph. Darst. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8120309421 
<br/><br/><label>Dewey Class. No.: </label>160 COP