Nicholson, Irene. <br/><br/>
The X in Mexico. 

 - [1st ed.] 
 - Garden City, N.Y.  Doubleday  1966. 
 - 295 p. 
<br/><br/>Bibliography: p.[279]-282. 
<br/><br/><label>LCCN: </label>65019944  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mexico--Civilization.