Klima-Macher! International Traunreut: Realschüler bauen Pflanzenkläranlage (China AG)
Aus Open Source Ecology (OSE) Germany - Entwicklungsplattform
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Klima-Macher International Traunreut: Realschüler bauen Pflanzenkläranlage (China AG) Basic Data Category: Small sewage treatment plant URL (first publication): https://www.youtube.com/watch?v=Lpkw3LkwLAE
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