Palmer, Douglas <br/><br/>
Graptolites : writing in the rocks 

 - Woodbridge, Suffolk  Boydell Press  1991 
 - 182 p.  ilus., 138 láms. 
 - Fossils Illustrated  v.1 .
<br/><br/><label>ISBN: </label>0-85115-262-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GRAPTOLITES<br/>INVERTEBRADOS FOSILES
<br/><br/><label>Universal Decimal Class. No.: </label>563.719/P19