Simpson, George Gaylord,  1902- <br/><br/>
Life :  an introduction to biology / 
George Gaylord Simpson, William S. Beck. 
 - Shorter ed. 
 - New York :  Harcourt,  1969. 
 - 546 p :  ill. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.