Aliens (3) Immigrants (2) Emigration and immigration (2) Emigración e inmigración (2) Migration (2) Étrangers (2) Émigration et immigration (2) immigration (2) monde (1) guerre (1) mur (1) zone de refuge (1) séparation des masses (physique) (1) carte (1) Union européenne (1) Europe (1) béton (1) ordre (1) abri (1) Europe (1) Belgique (1) Symbolism (1) Concentration camps (1) Costs (1) Assaying (1) Methods (1) Betrayal (1) States (1) Event history analysis (1) Political culture (1)