By decision of Sciences Organization, the United Nations Education and Culture, UNESCO, starting from 1995, the date of April 23rd, is celebrated as the World Day of Book and Copyright Licensing.
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26 April 1788, Alia Pasha took Ioannina without war
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26 April 1910, “Dibra Mountains” rise against the Ottoman army
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26 April 1915, was signet the Secret Treaty of London
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26 April 1919, was approved “The “League of Nations Statute”
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26 April 1919, the American Red Cross enables the opening of health centers