Management and conservation of rock art sites. 

 - California-XXU  :   Getty Conservation Institute,   1989. 
 - p. 1-2 :   il. 
 - Irregular 
 - Vol. IV, no. 2(1989) 
 - Newsletter ;   Vol. IV, no. 2 .
 - Getty Conservation Institute. .
<br/><br/><br/>Inglés.