Prior A N <br/><br/>
Formal logic. 

 - 2 
 - Oxford  At The Clarendon Press      1962 
 - vi,341p.  cm. 
<br/><br/><label>Standard No.: </label>45804 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R15, K2