Edited by Olga Obedkova, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Sarah, some rights reserved (CC BY)
- 2. (c) Enrico Blasutto, some rights reserved (CC BY-SA)
- 3. (c) 葉子, some rights reserved (CC BY-NC), uploaded by 葉子
- 4. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 5. (c) Fabian A. Boetzl, some rights reserved (CC BY-NC), uploaded by Fabian A. Boetzl
- 6. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 7. (c) David Renoult, some rights reserved (CC BY-NC), uploaded by David Renoult
- 8. (c) jacinta lluch valero, some rights reserved (CC BY-SA)
- 9. no rights reserved, uploaded by Татьяна Прозорова
- 10. (c) manual crank, some rights reserved (CC BY-NC-SA)
- 11. (c) --Tico--, some rights reserved (CC BY-NC-ND)
- 12. (c) Hans-Jürgen Becker, some rights reserved (CC BY-NC-SA)
