Friedrich Wilhelm Georg Struve and his geodetic arc http://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/01/23120826/12068760505_c4f894aa7c_z.jpghttp://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/01/23120826/12068760505_c4f894aa7c_z-150x150.jpgAnne-Sophie Redisch