This image is a derivative work of the following images: File:Gps-atmospheric-efects.png licensed with Cc-by-sa-3.0 2010-04-09T14:08:51Z Javiersanp 600x592...
image is a derivative work of the following images: File:Sygnal_GPS-opoznienie_atmosferyczne.png licensed with Cc-by-sa-3.0 2011-04-18T13:55:16Z Upior polnocy...
This PNG graphic was created with GIMP. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. You are free:...
