état (2) Databases (2) Databases (2) Commerce (2) Databases (2) Navigation--History (2) Commerce (2) Business (2) monde (1) association (1) recherche historique (1) champ (1) abords (agglomération) (1) Nineteen fifties (1) Societies (1) Social groups (1) Impact (1) History--Research (1) Change (1)