Darwin, Charles. <br/><br/>
The origin of species / 
Charles Darwin ; edited with an introduction by Gillian Beer. 
 - Oxford :  Oxford University Press,  1996. 
 - xxxiii, 439 p. :  ill. ;  20 cm. 
 - The World's classics. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9780192834386 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution (Biology)<br/>Natural selection.