Editore: Oklahoma Geological Survey., 1930
Da: Eryops Books, Stephenville, TX, U.S.A.
Soft cover. Condizione: Good. ORIGINAL 1930 PUBLICATION; ex- library; issued w/ front paper cover only; includes the folded map (complete for this publication); split in paper covering at top of spine (taped); light creasing of upper corner of several pages; o/w in good condition. Book.