Columbia subject headings:
Harvard subject headings:
Naval architecture--Spain--Early works to 1800.
Shipbuilding--Spain--Early works to 1800.
Princeton subject headings:
Galleons--Spain--Early works to 1800.
Naval architecture--Spain--Early works to 1800.
Naval architecture--Spain--History--Sources.
Shipbuilding--Spain--Early works to 1800.
Shipbuilding--Spain--History--Sources.