@misc{_Das,
 howpublished={online},
 publisher={Eugen Diederichs},
 language={ger},
 title={Das einzig Notwendige : Unum necessarium},
 type={książka},
 keywords={filozofia, teologia, Komeński, Jan Amos (1592-1670), Seeger, Johannes, Keller, Ludwig (1849-1915)},
}