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The National Library of Serbia preserves precious sound treasure on 78 rpm gramophone records in its Special Collections. There are around 1600 records, and more than half (around 900) has been digitised in the last 7 years. The oldest ones date from the beginning of the past century (1901-1902), and the earliest ones are from sixth decade of the 20th Century.
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This book collection includes issues from the period of World War One, but also from the postwar period, if their topic is war-related to the Serbian people.
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This digital collection of cartographic material includes maps and atlases of military operations during the war, as well as various political projections for the Balkans during and after the war.