@misc{Voigt_Friedrich_Siegmund_(1781–1850)_Lehrbuch_1838,
 author={Voigt, Friedrich Siegmund (1781–1850)},
 copyright={Public Domain},
 address={Stuttgart},
 howpublished={online},
 year={1838},
 publisher={E. Schweizerbart},
 language={ger},
 title={Lehrbuch der Zoologie},
 URL={http://www.rcin.org.pl/Content/78559/PDF/WA488_102494_796_4_Voigt-Lehrbuch.pdf},
 keywords={Animals, Crustaceans, Arachnids, Insects, Myriapoda, Ringworms (Annelida)},
}