| Mediendatei | Quelle |
|---|---|
| stahlmandesign_457477398.jpg | Flickr.com/stahlmandesign |
| rapidtravelchai_13511028923.jpg | Flickr.com/rapidtravelchai |
| rapidtravelchai_13511285424.jpg | Flickr.com/rapidtravelchai |
| roman-harak_4854346596.jpg | Flickr.com/roman-harak |
| jacobsroom_4986962488.jpg | Flickr.com/jacobsroom |
| iaea_imagebank_5394791059.jpg | Flickr.com/iaea_imagebank |
| roman-harak_4853744431.jpg | Flickr.com/roman-harak |
| roman-harak_5654372657.jpg | Flickr.com/roman-harak |
| carlmontgomery_535801336.jpg | Flickr.com/carlmontgomery |
| ebrd.com_shell_close.jpg | EBRD.com |
| welt.de_shell_schema.jpg | Welt.de |
| Mediendatei | Quelle |
| bass_Tscherno20.pdf | Bundesamt für Strahlenschutz |