Erwin, Douglas H.  <br/><br/>
Extinction   how life on earth nearly ended 250 million years ago 
Douglas H. Erwin 
 - Princeton  Princton University Press  2006 
 - viii296p.  figs; index; notes; refs 
<br/><br/><label>ISBN: </label>0-691-00524-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ExtinctionLife In The Universe
<br/><br/><label>Universal Decimal Class. No.: </label>551.12:551.7/.8  / ERW