@misc{Banzhaf_Walter_(1901–1941)_Mare_1932,
 author={Banzhaf, Walter (1901–1941)},
 copyright={Public Domain},
 journal={Publikacje znanych biologów (zbiór odbitek OZwRCIN)},
 address={[Berlin]},
 howpublished={online},
 year={1932},
 publisher={[unknown]},
 language={ger},
 type={Text},
 title={Mare Balticum 3 : Zum Herbstvogelzug 1931 auf der Greifswalder Oie},
 URL={http://rcin.org.pl/ibd/Content/68086/PDF/s103.pdf},
 keywords={Autumn migration of birds, Island Greifswalder Oie (nature reserve), Baltic Sea},
}