Escobar, Angels. <br/><br/>
Conservation ;   Vol. 19, no. 2 

 - Los Angeles-XXUZ:  :   Getty Conservation Intitute,   2004. 
 - p. 20-22 :   il. 
 - Cuatrimestral 
 - Vol. 19, no 2(2004).  
 - Conservation ;   Vol. 19, no. 2 .
 - Getty Conservation Intitute. .