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Wave mono. de January monochromatische Welle cosFunktion own original text selbst gezeichnet Jkrieger Apr CEST PDrelease Original upload log de Wdwdbot CommonsHelper de Wavemono Jkrieger bytes no Beschreibung monochromatische Welle cosFunktion Quelle selbst gezeichnet Fotograf oder Zeichner BildPD fr Public Domain