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Другие публикации лиц с тем же именем

Zum 150. Geburtstag Constantin Koenens. Jahrbuch für den Rhein-Kreis Neuss, (2004)Constantin Koenen. Kueppers, Neuss, (1984)Constantin Koenen (1854-1929): Leben und Werk des Archäologen. Förderkreis Wierstraet, Neuss, (1984)