@misc{Petry_Ludwig_(1908-1991)_Bibliographie,
 author={Petry, Ludwig (1908-1991)},
 address={Breslau (Wrocław)},
 howpublished={online},
 publisher={Kommissionsverlag Trewendt & Granier},
 language={ger},
 title={Bibliographie der Schlesischen Geschichte 1928-1934... [Register]},
 keywords={Śląsk, bibliografia, historia Śląska},
}