Hackstaff L H <br/><br/>
Systems of formal logic 

 - Dordrecht  D Reidel        1966 
<br/><br/><label>Standard No.: </label>65,116 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHILOSOPHY
<br/><br/><label>Dewey Class. No.: </label>R14, K63