Evolutionary emergence of language  Social function and the origins of linguistic form 
Ed. by Chris Knight, Michael Studdert-Kennedy, James R. Hurford 
 - Cambridge  Cambridge University Press  2000 
 - X,426p. 
<br/><br/><label>ISBN: </label>0521786967 
<br/><br/><label>Dewey Class. No.: </label>401  / P;2