Copi , Irving M. . <br/><br/>
Introduction to Logic /  Textual Documents 
Irving M.Copi & Carl Cohen. 
 - 9th ed. / 
 - New Delhi :  Prentice-Hall of India(Pvt Ltd) ,  C1994. 
 - 729p. ;  22cn. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>81-203-0942-1 
<br/><br/><label>Subjects--Index Terms: </label>Logic G-Philosophy 
<br/><br/><label>Dewey Class. No.: </label>160  / Co 791 In