@misc{_Delineatio_[ca,
 editor={Nilson, Johann Esaias (1721–1788). Ryt.},
 copyright={Public Domain},
 address={Aug. Vindel [Augsburg]},
 howpublished={online},
 year={[ca 1766]},
 publisher={[s.n.]},
 language={lat},
 language={pol},
 title={Delineatio Tertiae Salisfodinae Wielicensis},
 keywords={salt mines, maps of mines, cross sections, Wieliczka, 18th century},
}