@misc{Dahl_Friedrich_(1856–1929)_Grundlagen_1921,
 author={Dahl, Friedrich (1856–1929)},
 copyright={Public Domain},
 address={Jena},
 howpublished={online},
 year={1921},
 publisher={Verlag von Gustav Fischer},
 language={ger},
 type={Text},
 title={Grundlagen einer ökologischen tiergeographie. Teil 1},
 URL={http://www.rcin.org.pl/Content/134800/PDF/WA488_169337_2019731_Dahl-Tiergeographie-1.pdf},
 keywords={Animal ecology, Species distribution - reproduction - biocenotics - geographic and animal classification},
}