Administrative policies :  for recreation areas of the national park system ,national scenic riverways/  
Skwart l. Udall. 
 - Washington D.C. :  National Park Services,  1968. 
 - 108 p. : 
<br/><br/> includes index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>national park management 
<br/><br/><label>LC Class. No.: </label>SB482 .A3 1968