Columbia subject headings:
Picardy (France)--History--Exhibitions.
Reconstruction (1914-1939)--France--Picardy--Exhibitions.
World War, 1914-1918--Destruction and pillage--France--Picardy--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Picardy (France)--History--Exhibitions.
Reconstruction (1914-1939)--France--Picardy--Exhibitions.
World War, 1914-1918--Destruction and pillage--France--Picardy--Exhibitions.