Clarkson, E.N.K. . <br/><br/>
Invertebrate Paleontology and Evolution /  Textual Documents 
E.N.K. Clarkson. 
 - 2nd ed. / 
 - London :  Allen & Unwin ,  1986. 
 - xiii, 382p. :  ill. ;  25cm . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0-04-560013-9 
<br/><br/><label>Subjects--Index Terms: </label>Geology Palaeontology-Invertebrate Invertebrate paleontology-Evolution Fossils Historical geology PG-Geology 
<br/><br/><label>Dewey Class. No.: </label>560  / Cl 511 In