@misc{Poniatowski_Stanisław_(1884-1945)_List,
 author={Poniatowski, Stanisław (1884-1945) and https://viaf.org/viaf/56736113/},
 howpublished={online},
 language={pol},
 type={text},
 title={List Stanisława Poniatowskiego do prof. Vladimira Tkalcicia, 30.11.1931},
 keywords={letter, Poniatowski, Stanisław (1884-1945), Tkalcic, Vladimir, Enrich Europeana Plus},
}