Investigating the earth 

 - Boston:  Houghton Mifflin,  1972. 
 -  xiv, 594p. 
<br/><br/> Includes bibliography and index 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology<br/>Earth 
<br/><br/><label>Dewey Class. No.: </label>550  / AMI