Hughes, G E <br/><br/>
Elements of formal logic 

 - Bombay:   B I Publications,  1965 
 - xi, 396p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic 
<br/><br/><label>Subjects--Index Terms: </label>Decision procedure 
<br/><br/><label>Universal Decimal Class. No.: </label>D 168.51  / K5