@misc{Grotefend_Hermann_(1845-1931)_Ueber,
 author={Grotefend, Hermann (1845-1931)},
 address={Breslau},
 address={Aurich},
 howpublished={online},
 publisher={Josef Max & Comp. (M. Tietzen)},
 publisher={H. W. H. Tapper & Sohn},
 language={ger},
 title={Ueber Sphragistik : Beiträge zum Aufbau der Urkundenwissenschaft},
 type={książka},
 keywords={pieczęcie},
}