Columbia subject headings:
Harvard subject headings:
Reconstruction (1914-1939)--France--Somme River Valley.
Reconstruction (1914-1939)--France--Somme.
Somme River Valley (France)--History--20th century.
Princeton subject headings:
Reconstruction (1914-1939)--France--Somme River Valley.
Somme River Valley (France)--History--20th century.