Edited by Juan Carlos López Domínguez, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) beautifulcataya, some rights reserved (CC BY-NC-ND)
- 2. (c) Dorota (Dorothy), some rights reserved (CC BY-SA)
- 3. (c) Phil Sellens, some rights reserved (CC BY)
- 4. (c) Luis Rodriguez, some rights reserved (CC BY-NC), uploaded by Luis Rodriguez
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- 6. (c) Opuntia Cadereytensis, some rights reserved (CC BY-NC), uploaded by Opuntia Cadereytensis
- 7. (c) Cheng-Tao Lin, some rights reserved (CC BY), uploaded by Cheng-Tao Lin
- 8. (c) Steve Guttman, some rights reserved (CC BY-NC-ND)
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- 10. (c) CH Hemphill, some rights reserved (CC BY-NC), uploaded by CH Hemphill
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- 12. (c) Alexis López Hernández, some rights reserved (CC BY), uploaded by Alexis López Hernández
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- 15. (c) Pedro Nájera Quezada, some rights reserved (CC BY-NC), uploaded by Pedro Nájera Quezada
- 16. (c) Idlegrraphics, some rights reserved (CC BY-NC-SA), uploaded by Idlegrraphics
- 17. (c) Juha Tuomola, some rights reserved (CC BY-NC), uploaded by Juha Tuomola
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- 19. (c) maestro_rojo, some rights reserved (CC BY-NC), uploaded by maestro_rojo
- 20. (c) Elizabeth Torres Bahena, some rights reserved (CC BY-NC), uploaded by Elizabeth Torres Bahena
- 21. (c) García-Martínez Miguel A., some rights reserved (CC BY-NC), uploaded by García-Martínez Miguel A.
- 22. (c) teban, some rights reserved (CC BY-NC)
- 23. (c) Carlos G Velazco-Macias, some rights reserved (CC BY-NC), uploaded by Carlos G Velazco-Macias
- 24. (c) Matthias Barth, some rights reserved (CC BY-NC)
- 25. (c) Dra. Laura Elvia Uribe Lara, some rights reserved (CC BY-NC), uploaded by Dra. Laura Elvia Uribe Lara
- 26. (c) Alfredo Eloisa, some rights reserved (CC BY-NC-SA)
- 27. (c) Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker
- 28. (c) Azul B.M, some rights reserved (CC BY-NC-ND), uploaded by Azul B.M
- 29. (c) Carlos Domínguez-Rodríguez, some rights reserved (CC BY-NC), uploaded by Carlos Domínguez-Rodríguez
- 30. (c) gbeckmann, some rights reserved (CC BY-NC)
