Simpson, George Gaylord <br/><br/>
Tempo and mode in evolution 
George Gaylord Simpson. 
 - New York  Columbia University Press  1984. 
 - x, 237 p.  ill. 
 - A Columbia classic in evolution .
 - Columbia classics in evolution series. .
<br/><br/> "With a new introduction"--Cover.  Reprint. Originally published: New York : Columbia University Press, c1944.  Includes index. 
<br/><br/>Bibliography: p. [219]-226. 
<br/><br/><label>ISBN: </label>0231058470 
<br/><br/><label>LCCN: </label>83023132 //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution Biology
<br/><br/><label>LC Class. No.: </label>QH371  / .S54 1984 
<br/><br/><label>Dewey Class. No.: </label>575