Darwin, Charles,  1809-1882. <br/><br/>
The origin of species  a variorum text /  [electronic resource] : 
Charles Darwin ; edited by Morse Peckham. 
 - Philadelphia [Pa.] :  University of Pennsylvania Press,  1959. 
 - 816 p. :  ill. 
<br/><br/> With a reproduction of the t.p. of the original ed. published in 1859 under title: On the origin of species by means of natural selection.  First paperback edition 2006. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><br/>Electronic reproduction. <br/>Palo Alto, Calif. : <br/>ebrary, <br/>2011. <br/>Available via World Wide Web. <br/>Access may be limited to ebrary affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution (Biology)<br/>Natural selection.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QH365  / .O2 1959eb