@misc{Krüger_Piotr_(1580-1639)_Petri,
 author={Krüger, Piotr (1580-1639)},
 address={Dantisci},
 howpublished={online},
 publisher={Hünefeld, Andrzej (1581-1666). Druk.},
 language={lat},
 title={Petri Crügeri [...] Doctrina astronomiae sphaerica praeceptis methodicis et perspicuis, per globum, tabulas, trigonometriam tam veterem quam logarithmicam explicata ac demonstrata cum tabulis ad eam pertinentibus.},
 keywords={Kolekcje Piastowskie, 17 w., astronomia},
}