Columbia subject headings:
Choisy, Thomas de, approximately 1631-1710.
Fortification--Germany--Saarlouis--History--Congresses.
Military engineering--Germany--Saarlouis--Congresses.
Military engineers--Germany--Biography--Congresses.
Military governors--Germany--Biography--Congresses.
Saarlouis (Germany)--Buildings, structures, etc.
Harvard subject headings:
Choisy, Thomas de, approximately 1631-1710--Congresses.
Fortification--Germany--Saarlouis--History--Congresses.
Military engineering--Germany--Saarlouis--Congresses.
Military engineers--Germany--Biography--Congresses.
Military governors--Germany--Biography--Congresses.
Saarlouis (Germany)--Buildings, structures, etc.--Congresses.
Princeton subject headings: