Lewis, Clarence Irving <br/><br/>
Symbolic logic /  
by Clarence Irving Lewis and Cooper Harold Langford 
 - 2a ed. 
 - New York :   Dover,   1959 
 - 518 p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>LOGICA<br/>SIMBOLOS MATEMATICOS
<br/><br/><label>Universal Decimal Class. No.: </label>164