Lowenthal, David. <br/><br/>
Pioneering stewardship :   new challenges for CRM. 

 - Wshington-XXU :   National Park Service,   2003. 
 - p. 7-13 
 - Anual 
 - Vol. I, no. 1(2003) 
 - CRM: The Journal of Heritage Stewardship ;   Vol. I, no. 1 .
 - Estados Unidos.   National Park Service,. .
<br/><br/><br/>Inglés.