Columbia subject headings:
France--Foreign relations--Italy--Lucca.
France--Foreign relations--Italy--Tuscany.
Lucca (Italy)--Foreign relations--France.
Tuscany (Italy)--Foreign relations--France.
Harvard subject headings:
France--Foreign relations--Italy--Lucca.
France--Foreign relations--Italy--Tuscany.
Lucca (Italy)--Foreign relations--France.
Tuscany (Italy)--Foreign relations--France.
Princeton subject headings:
France--Foreign relations--Lucca.
France--Foreign relations--Tuscany.
Tuscany (Italy)--Foreign relations--France.