Hughes , G.E. . <br/><br/>
The Elements of Formal Logic /  Textual Documents 
G.E.Hughes & D.G.Londey. 
 - 1st ed. / 
 - Bombay :  B.I. Publications ,  1965. 
 - vii,398p. ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>Logic Formal Logic G-Philosophy 
<br/><br/><label>Dewey Class. No.: </label>160  / H 874 El