Hansen, Thomas <br/><br/>
Trilobites of the middle Ordovician Elnes formation of the Oslo region, Norway 
by Thomas Hansen 
 - Hoboken, NJ  Wiley-Blackwell  c2009 
 - 215 p. : ill., maps ; 28 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781405198844 
<br/><br/><label>ISSN: </label>2009288023 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology - Ordovician<br/>Trilobites - Norway
<br/><br/><label>Dewey Class. No.: </label>565.393 HAN