Clifford, John E. <br/><br/>
Tense and tense logic / 
by John E. Clifford. 
 - The Hague :  Mouton Publishers,  1975. 
 - 173 p. :  22 cm. 
 - Janua linguarum. Series minor ;  215 .
<br/><br/> Includes index. 
<br/><br/>Bibliography:p.168-169. 
<br/><br/><label>ISBN: </label>9027934533 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tense (Logic).<br/>Logic, Symbolic and mathematical.