Edited by Juan Carlos Pachón Arttesano, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Francesco Veronesi, some rights reserved (CC BY-NC-SA)
- 2. (c) D. Alexander Carrillo Mtz., some rights reserved (CC BY)
- 3. (c) sarbhloh, some rights reserved (CC BY-NC-ND)
- 4. (c) David Allen, some rights reserved (CC BY-NC-SA)
- 5. (c) Dario Sanches, some rights reserved (CC BY-SA)
- 6. (c) Dominic Sherony, some rights reserved (CC BY-SA)
- 7. (c) barloventomagico, some rights reserved (CC BY-NC-ND)
- 8. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 9. (c) Michael Woodruff, some rights reserved (CC BY-SA)
- 10. (c) Scott Bowers, some rights reserved (CC BY-NC)
- 11. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 12. (c) Dave Curtis, some rights reserved (CC BY-NC-ND)
- 13. (c) David Cook, some rights reserved (CC BY-NC)
- 14. (c) Laura Gooch, some rights reserved (CC BY-NC-SA)
- 15. (c) Joseph C Boone, some rights reserved (CC BY-SA)
- 16. (c) Andy Jones, some rights reserved (CC BY-NC-SA)
- 17. (c) Ken-ichi Ueda, some rights reserved (CC BY)
- 18. (c) Thomas Stromberg, some rights reserved (CC BY-NC)
- 19. (c) Guillermo Vasquez, some rights reserved (CC BY)
- 20. (c) Manuel Grosselet, some rights reserved (CC BY-NC), uploaded by Manuel Grosselet
- 21. (c) Cláudio Dias Timm, some rights reserved (CC BY-NC-SA)
- 22. (c) Antonio Arnaiz-Villena, Valentin Ruiz-del-Valle, some rights reserved (CC BY-SA)