USA. Board of Visitors to the United States Naval Observatory Bezüge im Wissensnetz Administrative Überordnung der Körperschaft (2) GND-Körperschaften United States Naval Observatory USA Verfasst (1) DNB-Titeldaten Report of the Board of Visitors to the United States Naval Observatory Creator (1) DNB-Titeldaten Report of the Board of Visitors to the United States Naval Observatory