Clarkson E N K <br/><br/>
Invertebrate palaeontology and evolution 

 - London  George Allen and Unwin        1979 
 - x,323p.  cm. 
<br/><br/><label>Standard No.: </label>48627 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H61, L9