Cooper, G. Arthur 1902-2000 Tertiary and pleistocene brachiopods of Okinawa Ryukyu islands / by G. Arthur Cooper. -- Washington : United States Government Printing Office, 1957 - 18 p., [3] h. de lam. -- (Geological Survey Professional Paper ; 314-A). Subjects--Topical Terms: BraquiópodosJapónPleistocenoTerciario Universal Decimal Class. No.: 564.8(52)