  2011 - Encounter Earth Interactive Geoscience Exploration [2nd Edition] (Paperback) ISBN-13: 9780321765444 ISBN-10: 0321765443 Genre: Science & Math ?  2008 - Encounter Earth Interactive Geoscience Explorations (Paperback) ISBN-13: 9780321581297 ISBN-10: 0321581296 Genres: Reference, Science & Math, Engineering & Transportation ? |
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