Alsen, Peter, <br/><br/>
The Early Cretaceous (Late Ryazanian - Early Hauretivian) ammonite fauna of North-East Greenland : 

 -  Wiley-Blackwell,  2007. 
<br/><br/><label>ISBN: </label>9781405180146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science.
<br/><br/><label>Dewey Class. No.: </label>569.53  / ALS