Copi, I.M.  . <br/><br/>
Symbolic logic /  
by Irving M. Copi. 
 - 5th ed /  
 - New Delhi :   Prentice-Hall of India Private Limited ,   1979 
 - xiii, 398p :  
<br/><br/><label>ISBN: </label>81-203-0970-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy
<br/><br/><label>Dewey Class. No.: </label>R14  / L9;24