Darwin, Charles <br/><br/>
Origin of species  a variorum text 
by Charles Darwin 
 - Philadelphia  University of Pennsylvania press  1959 
 - 816p 
<br/><br/> With a reproduction of the t.p of the original ed. 
<br/><br/><label>ISBN: </label>9780812219548 
<br/><br/><label>Dewey Class. No.: </label>576.8  / P06