@misc{Umiastowski_Roman_(1893-1982)_Russia,
 author={Umiastowski, Roman (1893-1982)},
 howpublished={online},
 publisher={London : Aquafondata},
 language={eng},
 type={książka},
 title={Russia and the Polish Republic 1918-1941},
 keywords={Polska a Rosja - 1918-1941},
}