National Geographic guide to the national parks of the United States 
[Caroline Hickey, project manager] 
 - 4th ed 
 - Washington, DC  National Geographic  2003 
 - 464 p. : col. ill., col. maps ; 22 cm 
<br/><br/><label>ISBN: </label>9780792228776 
<br/><br/><label>ISSN: </label>2003269667 
<br/><br/><label>Subjects--Topical Terms: </label><br/>National parks and reserves - United States - Guidebooks<br/>Outdoor recreation - United States - Guidebooks<br/>United States - Guidebooks
<br/><br/><label>Dewey Class. No.: </label>917.304929 NAT