Editore: Tulsa Geological Society., 1954
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. ORIGINAL Articles, disbound from journal; no covers; in very good condition. Journal.
Editore: Oklahoma Geological Survey, Norman
Da: Terrace Horticultural Books, St. Paul, MN, U.S.A.
Soft cover. Condizione: Very Good. Copyright Date: 1956 Octavo, PP.57.