Investigating the earth / 
Miles F. Harris... [et al.], sponsored by the American Geological Institute 
 - Revised edition 
 - Boston :  Houghton Mifflin,  1976 
 - 529 p. :  ill., maps. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0395206952 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences