@misc{Grinnell_Joseph_(1877–1939)_Trends_1936,
 author={Grinnell, Joseph (1877–1939)},
 copyright={Public Domain},
 address={[unknown]},
 journal={Publications of famous biologists - a collection of prints},
 howpublished={online},
 year={1936},
 publisher={[unknown]},
 language={eng},
 type={Text},
 title={Trends in Modern Ornithology},
 URL={http://rcin.org.pl/Content/127558/PDF/WA488_160276_19746_s3697.pdf},
 keywords={Ornithology, Bird behavior pattern, Ornithology - geographical distribution, Ornithology - applied research methods},
}