@misc{Poulton_Edward_Bagnall_(1856–1943)_Theories_1894,
 author={Poulton, Edward Bagnall (1856–1943)},
 copyright={Public Domain},
 journal={Publications of famous biologists - a collection of prints},
 address={[Boston]},
 howpublished={online},
 year={1894},
 publisher={[unknown]},
 language={eng},
 type={Text},
 title={Theories of evolution},
 URL={http://rcin.org.pl/Content/133787/PDF/WA488_168405_19746_s2025.pdf},
 keywords={Darwin-Wallace natural selection - individual variability - heredity - struggle for existence},
}