Keller, John Esten. <br/><br/>
Alfonso X el Sabio / 
by John Esten Keller. 
 - New York :  Twayne Publishers,  c1967. 
 - 198 p. ;  22 cm 
 - Twayne's world authors series ;  12 Twayne's world authors series. Spain .
 -  12 Twayne's world authors series ; Twayne's world authors series. .
<br/><br/>Bibliographical reference and index, 
<br/><br/><label>Subjects--Personal Names: </label><br/>Alfonso King of Castile and Leon,  1221-1284. 
<br/><br/><label>Dewey Class. No.: </label>861.1  / KEA 1967