Investigating the earth 

 - Boston :  Houghton Mifflin,  c1972 
 - xiv, 594 p. :  ill. (some col.) maps,  ports. ;  26 cm. 
<br/><br/> Sponsored by the American Geological Institute; supported by the National Science Foundation  Includes index 
<br/><br/><label>ISBN: </label> USD 9.60 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Earth
<br/><br/><label>Dewey Class. No.: </label>550