Reader's Digest natural wonders of the world / 
[editors, Richard L. Scheffel, Susan J. Wernert]. 
 - Pleasantville, N.Y. :  Reader's Digest Association,  1980. 
 - 463 p. :  col. ill. 
<br/><br/><label>ISBN: </label>0895770873 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural monuments--Dictionaries.