United States Naval Observatory: Полный список книг

United States Naval Observatory: список всех книг (2)

Catalogue of Stars Observed at the United States Naval Observatory During the Years 1845 to 1871 - United States Naval Observatory

Catalogue of Stars Observed at the United States Naval Observatory During the Years 1845 to 1871

United States Naval Observatory
Tables of Instrumental Constants - John R. Eastman, Making of America Project, Naval Observatory United States

Tables of Instrumental Constants

John R. Eastman, Making of America Project, Naval Observatory United States