Columbia subject headings:
Harvard subject headings:
Beyin (Ghana)--Buildings, structures, etc.
Fort Apollonia (Beyin, Ghana)
Fortification--Ghana--Beyin.
Fortification--History
Military architecture--Conservation and restoration--Ghana--Beyin.
Military architecture--History.
Princeton subject headings:
Beyin (Ghana)--Buildings, structures, etc.
Fort Apollonia (Beyin, Ghana)
Fortification--Ghana--Beyin.
Fortification--History.
Military architecture--Conservation and restoration--Ghana--Beyin.
Military architecture--History.