1999 - Earth the Sapphire Planet (Paperback) ISBN-13: 9780486406770 ISBN-10: 0486406776 Genres: Science & Math, Engineering & Transportation ? 1992 - The Bone Hunters the Heroic Age of Paleontology in the American West (Paperback) ISBN-13: 9780486269177 ISBN-10: 0486269175 Genres: Science & Math, Outdoors & Nature ? |