1998 - The Oligocene Bridge Creek Flora of the John Day Formation Oregon [University of California Publications in Geological Sciences] (Paperback) ISBN-13: 9780520098169 ISBN-10: 0520098161 Genres: Science & Math, Engineering & Transportation ? Fruits and Seeds of the Middle Eocene Nut Beds Flora Clarno Formation Oregon [Palaeontographica Americana] (Paperback) |