Okasha, Samir. <br/><br/>
Evolution and the levels of selection  / 
Samir Okasha. 
 - Oxford :    Clarendon Press ;  2006. 
 - xi,263p. 
<br/><br/><label>ISBN: </label>9780199556717 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural selection<br/>Levels of selection <br/>Philosophy