ISBN 131468115X books & textbook
Pennsylvanian Invertebrates of the Mazon Creek Area, Illinois: The Morphology and Affinities of Tullimonstrum... Volume Fieldiana, Geology, Vol.12, No
1927-1976, Johnson Ralph Gordon
Hardpress Publishing /2013-12-11 Paperback / 48 Pages
isbn-10: 131468115X / isbn-13: 9781314681154
