Lehmann, Winfred P. <br/><br/>
Fossil invertebrates 

 - Cambrdige  Cambrdige University Press  1983 
 - 350p. 
<br/><br/><label>ISBN: </label> RS 122.25 
<br/><br/><label>Source: </label> RS 122.25 
<br/><br/><label>Dewey Class. No.: </label>592 LEH