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Collective security in the League of Nations

Members states of the League Council, between 1919 and 1940

  • Imagem feita em 2018
  • Dados relativos a 1919 e 1940
  • Imagen hecha en 2018
  • Datos de 1919 e 1940
  • Image made in 2018
  • Data relating to 1919 e 1940