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Subjects
Mathematical models, Economic aspects, Economic aspects of Energy consumption, Economic aspects of Energy development, Economic indicators, Energy consumption, Energy development, Index numbers (Economics), Management, Natural areas, Outdoor recreation, Recreation areasPlaces
United StatesID Numbers
- OLID: OL1596825A
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September 1, 2008 | Edited by RenameBot | fix author name |
April 1, 2008 | Created by an anonymous user | initial import |