Quellen

Quellenverzeichnis

Shutterstock

Urheber nachfolgende Dateien www.shutterstock.com
Standardlizenz

Wikimedia Commons

Eiskristalle

Fleur de givre.tif
By Annick MONNIEROwn work, CC BY-SA 3.0, Link


Erneuerbare Energien in Enkenbach-Alsenborn.JPG
By Jan.boedekerOwn work, CC BY-SA 3.0, Link


Untermassfeld mit Wasserschloss.jpg
By Winfried GaensslerOwn work, CC BY-SA 3.0, Link


Suhl pano.jpg
By SehLaxOwn work, CC BY-SA 3.0, Link


Nordhäuser Dom-2.jpg
By Nordhäuser_Dom.JPG: Michael Sander
derivative work: Rabanus Flavus (talk) – This file was derived from
 Nordhäuser Dom.JPG, CC BY-SA 3.0, Link


Blick auf Zella-Mehlis, Herbst, Richtung Mehlis.jpg
By Jener13Own work, CC BY-SA 4.0, Link


Brennwert.svg
Von Benutzer:Kino – selbst erstellt, CC-by-sa 2.0/de, Link


Dülmen, Göversheide -- 2015 -- 7718-22.jpg
By Dietmar RabichOwn work, CC BY-SA 4.0, Link


Gelugu (coconut wood) in Klaten, Java.jpg
By No machine-readable author provided. Meursault2004 assumed (based on copyright claims). – No machine-readable source provided. Own work assumed (based on copyright claims)., CC BY-SA 3.0, Link


Euro coins and banknotes.jpg
By Avij (talk · contribs) – Own work, Public Domain, Link


Col·lector terra radiant i tubs.JPG
CC BY-SA 3.0, Link



By © 2007 Nuno Pinheiro & David Vignoni & David Miller & Johann Ollivier Lapeyre & Kenneth Wimer & Riccardo Iaconelli / KDE, LGPL, Link


Rohrbruch 001.jpg
By PicturemeOwn work, CC0, Link


2 Puffer einer Heizungsanlage.jpg
By AphexTwin – slebst erstellt, Public Domain, Link


Waermerueckgewinnung.svg
By OtterinfoOwn work, CC BY-SA 3.0, Link