Stamp issued in Germany - Democratic Republic (DDR) shows Prof. Dr. Robert Koch, bacteriologist, 125th annivers. of the Humboldt university, 250th annivers. of the Charité, circa 1960. Stock Image
Stamp issued in Germany - Democratic Republic (DDR) shows Prof. Dr. Robert Koch, bacteriologist, 125th annivers. of the Humboldt university, 250th annivers. of the Charité, circa 1960.