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Photo Credits
- 1. (c) Matt Lavin, some rights reserved (CC BY-SA)
- 2. (c) Nicholas Turland, some rights reserved (CC BY-NC-ND)
- 3. (c) Jason Grant, some rights reserved (CC BY), uploaded by Jason Grant
- 4. (c) Hörður Kristinsson, some rights reserved (CC BY-NC)
- 5. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 6. (c) randomtruth, some rights reserved (CC BY-NC-SA)
- 7. (c) 2011 Barry Breckling, some rights reserved (CC BY-NC-SA)
- 8. (c) Original uploader was Rebou at de.wikipedia. (Original text : Rebou), some rights reserved (CC BY-SA)
- 9. (c) Jamie Chavez, some rights reserved (CC BY-NC)
- 10. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
- 11. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 12. (c) Dan Dzurisin, some rights reserved (CC BY-NC-ND)
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- 17. (c) Juan Cruzado Cortés, some rights reserved (CC BY-SA), uploaded by Juan Cruzado Cortés
- 18. (c) Drew Avery, some rights reserved (CC BY), uploaded by Drew Avery
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