@misc{Blume_Wilhelm_Hermann_[Korespondencja,
 author={Blume, Wilhelm Hermann},
 address={Potsdam},
 howpublished={online},
 language={ger},
 type={text},
 title={[Korespondencja Friedricha Haasego - Haase 30]},
 keywords={Enrich Europeana Plus, correspondence},
}