Gerken, Ed books & textbook
Ammonites and the Other Cephalopods of the Pierre Seaway: Identification Guide
Larson, Neil L. Jorgensen, Steven D. Farrar, R. A. Larson, Peter L. Larson, Neal L Jorgensen, Steven D Farrar, Robert A Larson, Peter Gerken, Ed
Geoscience Pr /1997-02-17 Paperback / 148 Pages
isbn-10: 0945005253 / isbn-13: 9780945005254
Renaissance 53, Three Mass Proper Cycles from Jena 35
A-R Editions, Inc. /1982-01-01 Library Binding