Edited by Guillermo Santos, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
- 2. (c) Anne SORBES, some rights reserved (CC BY-NC-SA), uploaded by Anne SORBES
- 3. (c) Pat Deacon, some rights reserved (CC BY-NC), uploaded by Pat Deacon
- 4. (c) 葉子, some rights reserved (CC BY-NC), uploaded by 葉子
- 5. (c) Alexis, some rights reserved (CC BY), uploaded by Alexis
- 6. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 7. (c) Ingeborg van Leeuwen, some rights reserved (CC BY-NC-ND)
- 8. (c) Lauren Glevanik, some rights reserved (CC BY-NC), uploaded by Lauren Glevanik
- 9. (c) manual crank, some rights reserved (CC BY-NC-SA)
- 10. (c) Alvin Diamond, some rights reserved (CC BY-NC), uploaded by Alvin Diamond
- 11. (c) Thorsten Usée, some rights reserved (CC BY-NC), uploaded by Thorsten Usée
- 12. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
