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Except where otherwise noted, visual image content containing a “VISIONTANK”-logo on www.visiontank.ch is licensed under a Creative Commons (CC BY-NC-ND). This means, you are free to share as long as you follow: attribution, non-commercial and no-derivatives. Regarding further use, please contact : info@visiontank.ch. Images which do not contain any logos are copyrighted and may only be used with written permission.