This image is a derivative work of the following images: File:Duisburg_Wappen.svg licensed with PD-Coa-Germany 2008-01-23T15:25:41Z Amada44 600x600 (17601
Neubearbeitung des Banners der Stadt Duisburg durch Jürgen Krause. Permission (Reusing this file) Other versions This file was derived from: FlagofDuisburg.svg: