Columbia subject headings:
Dugout canoes--England.
Dugout canoes--Wales.
Dugout canoes.
England--Antiquities.
Navigation--England.
Navigation--Wales.
Navigation.
Wales--Antiquities.
Harvard subject headings:
Dugout canoes--England.
Dugout canoes--Wales.
Dugouts (Boats)
England--Antiquities.
Navigation--England.
Navigation--Wales.
Navigation.
Wales--Antiquities.
Princeton subject headings: