Belnap, Nuel D <br/><br/>
The Logic of Questions and Answers 

 - London  Yale University Press  1976 
 - 208p 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>0300019629     200 
<br/><br/><label>Dewey Class. No.: </label>N10  / B417