Editore: Gulf Coast Association of Geological Societies, 1963
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Very Good. ORIGINAL 1963 Article, disbound from journal; no covers; in very good condition. Journal.
Editore: Gulf Coast Association of Geological Societies., 1970
Da: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condizione: Good. ORIGINAL Abstracts, disbound from GCAGS Transactions volume; no covers; in very good condition. Journal.