Understanding the Earth / 
U. S. Geological Survey. 
 - [Washington]:   [United States Government Printing Office],   [1996].  
 - vi, 106 p. :  ill., maps, tables ;  28 cm. 
 - United States Geological Survey Yearbook Fiscal Year 1995  0892-3442 .
<br/><br/><label>ISBN: </label>0607858915 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth
<br/><br/><label>Dewey Class. No.: </label>550