@misc{Lückenhof_Johann_Kaspar_(1787–1858)._Autor_Lehrbuch_1833,
 author={Lückenhof, Johann Kaspar (1787–1858). Autor},
 copyright={Public Domain},
 address={Münster},
 howpublished={online},
 year={1833},
 publisher={Theissingschen Buchhandlung},
 language={ger},
 title={Lehrbuch der matematischen Geographie für Gymnasien},
 type={Text},
 URL={http://rcin.org.pl/Content/134069/PDF/WA51_156556_PTG58-r1833_Lehrbuch-der-matemat.pdf},
 keywords={mathematical geography, textbooks, Germany},
}