Goldblatt, Robert. <br/><br/>
Mathematics of modality / 
by Robert Goldblatt. 
 - Stanford, Calif. :  CSLI Publications,  1993. 
 - v, 273 p. 
 - CSLI Lecture Notes : No. 43. .
<br/><br/> Includes bibliographical references and index.  Contents : Matamathematics of modal logic--Semantics analysis of orthologic. 
<br/><br/><label>ISBN: </label>1881526240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modality (Logic).<br/>Modal analysis.