Editore: Brigham Young University., 1980
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. ORIGINAL Articles, disbound from journal; includes 3 large folded sheets with geologic maps, cross-sections and description of units (loosely-inserted; complete for these publications); no covers; light creasing of lower corners of leaves, o/w in very good condition. Journal.