Kummel, Bernhard,  1919- <br/><br/>
History of the earth :  an introduction to historical geology / 
Bernhard Kummel ; drawing by Evan L. Gillespie 
 - San Francisco :  W.H. Freeman,  1968 
 - 610 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth<br/>Geology, Stratigraphic<br/>Paleontology