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Keywords from Image Description:
Die Schweiz von damals historische Flugaufnahmen von Walter Mittelholzer ZrichSchwamendingen vor . ZrichSchwamendingen Switzerland aerial photography by Walter Mittelholzer Die Schweiz von damals historische Flugaufnahmen von Walter Mittelholzer Weltbild Verlag Olten Walter Mittelholzer upload by Roland zh PDold Swiss copyright