Columbia subject headings:
America--Discovery and exploration--Spanish.
Columbus, Christopher.
Harvard subject headings:
America--Discovery and exploration--Spanish.
Astronomy, Medieval.
Columbus, Christopher--Knowledge--Geography.
Columbus, Christopher--Travel--America.
Geography, Medieval.
Navigation--History--To 1500.
Princeton subject headings:
America--Discovery and exploration--Spanish.
Astronomy, Medieval.
Columbus, Christopher--Knowledge--Geography.
Columbus, Christopher--Travel--America.
Geography, Medieval.
Navigation--History--To 1500.