@misc{Walker_James_John_(1851–1939)_Macro-Lepidoptera_n.a.,
 author={Walker, James John (1851–1939)},
 copyright={Public Domain},
 journal={Publications of famous biologists - a collection of prints},
 address={[unknown]},
 howpublished={online},
 year={n.a.},
 publisher={[unknown]},
 language={eng},
 type={Text},
 title={Macro-Lepidoptera},
 URL={http://rcin.org.pl/ibd/Content/142247/PDF/WA488_177415_19746_s1654.pdf},
 keywords={Insects - butterflies (Macrolepidoptera), Insects - butterflies (Macrolepidoptera) - descriptions of the appearance of specimens, Insects - butterflies (Macrolepidoptera) - location offindings - England},
}