Columbia subject headings:
Architecture, Gothic--France--Languedoc-Roussillon.
Fortification--France--Languedoc-Roussillon.
Military architecture--France--Languedoc-Roussillon.
Harvard subject headings:
Princeton subject headings:
Architecture, Gothic--France--Languedoc-Roussillon.
Fortification--France--Languedoc-Roussillon.
Military architecture--France--Languedoc-Roussillon.