@misc{_Kreis-Blatt,
 howpublished={online},
 publisher={Merzbach, Ludwik},
 language={ger},
 type={gazeta},
 title={Kreis-Blatt des Kreises Posen-Ost 1907.11.30 Jg.19 Nr51},
 keywords={Kreis Posen-Ost, Posen-Ost, powiat poznański wschodni},
}