I once got a very thin (63 pages) paperback from the series "Les Essentiels Milan", with the title "La Justice en France" - "Mieux comprendre la justice" (hoping it would enlighten me). So that is the kind I was thinking of. Good luck in your quest Coops. It is admirable that you are prepared to do all that research - I bet one would be surprised at the results if one interviewed a cross-sample of French people on their constitution.