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Poster of w:May Day in w:People's Republic of Poland source
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This image is in the public domain because according to the non-retrospective copyright law of July 10, 1952, of the People's Republic of Poland , all photographs by Polish photographers published before the law was changed on May 23, 1994 without a clear copyright notice are assumed public domain. This applies worldwide. To uploader: Please provide where the image was first published and who created it.
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