Willson, Robert W. <br/><br/>
Astronomical notes on the maya codices 

 - Massachusetts, U. S. A.  1924 
 - 46 p. 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA