Strabon, Geographika 1,2,24 (online in englischer Übersetzung); Edward Luther Stevenson: Terrestrial and celestial globes; their history and construction, including a consideration of their value as aids in the study of geography and astronomy, New Haven 1921, S. 7–10 (online).
Strabon, Geographika 1,2,24 (online in englischer Übersetzung); Edward Luther Stevenson: Terrestrial and celestial globes; their history and construction, including a consideration of their value as aids in the study of geography and astronomy, New Haven 1921, S. 7–10 (online).