Hagen Koch *1940-ehem. NVA-Offizier, Denkmalschützer DDR / Dbesitzt... Foto di attualità - Getty Images
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GLOWA-Elbe II Statuskonferenz 14. Dez Potsdam Hagen Koch et al., BTU Cottbus Hagen Koch 1, Stefan Kaden 2, Michael Kaltofen 2 1 Brandenburg University. - ppt download
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