Clarkson, E. N. K.  1937- <br/><br/>
Invertebrate palaeontology and evolution / 
E.N.K. Clarkson. 
 - 4th ed. 
 - London ;  Malden, MA :  Blackwell Science,  1998. 
 - 452 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0632052384 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates, Fossil.
<br/><br/><label>LC Class. No.: </label>QE770  / .C56 1998