Columbia subject headings:
Elections--France--Somme.
France--Politics and government--2007-2012.
Nationalism--France--Somme.
Radicalism--France--Somme.
Right and left (Political science)
Right-wing extremists--France--Somme.
Harvard subject headings:
Elections--France--Somme.
France--Politics and government--2007-2012.
Nationalism--France--Somme.
Radicalism--France--Somme.
Right and left (Political science)--France--Somme.
Right-wing extremists--France--Somme.
Somme (France)--Politics and government.
Princeton subject headings: