Bull, William E. <br/><br/>
Time, tense and the verb: a study in theoretical and applied linguistics, with particular attention.to Spanish. 

 - Berkeley, Estados Unidos   University of California Press.  1971 
 - viii, 120 p. 23 cm.     
<br/><br/><label>Subjects--Topical Terms: </label><br/>LENGUA ESPAŅOLA - GRAMATICA - VERBO.
<br/><br/><label>Dewey Class. No.: </label>465.8/B872t