Columbia subject headings:
Historic preservation--France--Rochefort--Congresses.
Navy-yards and naval stations--France--Rochefort--History--Congresses.
Rochefort (France)--History, Naval--Congresses.
Harvard subject headings:
Historic preservation--France--Rochefort--Congresses.
Navy-yards and naval stations--France--Rochefort--History--Congresses.
Princeton subject headings:
Historic preservation--France--Rochefort--Congresses.
Navy-yards and naval stations--France--Rochefort--History--Congresses.