Melbo, Irving Robert. <br/><br/>
Our country's national parks / 
With the assistance of Robert Irving Melbo. 
 - Indianapolis :  Bobbs,  1973. 
 - 2 v. :  ill., maps. 
<br/><br/><label>LCCN: </label>72011075 
<br/><br/><label>Subjects--Topical Terms: </label><br/>National parks and reserves--United States.
<br/><br/><label>Dewey Class. No.: </label>917.3