Feys, Robert,  1889- <br/><br/>
Modal logic  / 
Robert Feys; edited with some complement by Joseph Dopp. 
 - Louvain :  E. Nauwelaerts ,  1965 
 - xiv, 219p.  ;  25cm 
 - collection de logique mathematoque. ser ;  B. 4 .
<br/><br/> On label mounted on t.p.: Humanities Press, New York. 
<br/><br/>Bibliography: p. 187-215. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modality (Logic).<br/>Logic, Symbolic and mathematical.
<br/><br/><label>Dewey Class. No.: </label>164 FEY