Eicher, Don L. <br/><br/>
Geologic time / 
by Don L. Eicher 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1968 
 - viii, 149 p. :  ill. ;  22 cm. 
<br/><br/>Bibliography: p. 143-145 
<br/><br/><label>LCCN: </label>68-010423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological time<br/>Geology, Stratigraphic