Keywords: RČs. Poměry národnostní.jpg en Map of the Czechoslovak Republic 1918-1945 Map of nationalities Atlas světa Vojenský zeměpisný ústav v Praze Military geographical institute in Prague 1931 PD-Art Maps in Czech Historical maps of ethnic groups in Europe Maps of ethnic groups in the Czech Republic Maps of ethnic groups in Slovakia Maps of the Czechoslovak Republic 1918-1938 |