@misc{Köppen_Wladimir_Peter_(1846–1940)_Klimakunde._1911,
 author={Köppen, Wladimir Peter (1846–1940)},
 copyright={Public Domain},
 address={Leipzig},
 howpublished={online},
 year={1911},
 publisher={G. J. Göschen’sche Verlagshandlung},
 language={ger},
 title={Klimakunde. 1, Allgemeine Klimalehre},
 type={Text},
 URL={http://www.rcin.org.pl/Content/193160/PDF/KR171_225430_Koppen-1911_Klimakunde-1-SG114.pdf},
}