Author: Miller, A.K., Carl O.Dunbar & G.E.Condra.
Title: The nautiloid cephalopods of the Pennsylvanian system in the mid-continent region.
Description: [Lincoln], Printed by the authority of the State of Nebraska, 1933. 240,[29] pp. 32 b./w. figs & 24 b./w. plts. Softcover. 8vo. - Spine sl. dam. (Nebraska Geological Survey, Bulletin 9, Second Series).

Keywords: Geology America Paleontology North America Geologie Noord-Amerika Paleontologie Amerika