Rescher Nicholas <br/><br/>
Many -  valued logic 

 - New York  McGraw Hill U. S. A.       1969 
 - xv, 359p  cm. 
<br/><br/> Appendix: P 332-50 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Philosophy<br/>Logic-Scientific Method
<br/><br/><label>Dewey Class. No.: </label>R17, K9