@misc{Thorell_Tamerlan_(1830–1901)_On_[1886], author={Thorell, Tamerlan (1830–1901)}, copyright={Public Domain}, address={[London?]}, journal={Publications of famous biologists - a collection of prints}, howpublished={online}, year={[1886]}, publisher={[unknown]}, language={eng}, title={On Dr. Bertkau's Classification of the Order Aranece, or Spiders}, type={Text}, URL={http://rcin.org.pl/Content/124520/PDF/WA488_156497_19746_s1141.pdf}, keywords={Spiders (Araneae) - modifications in animal structure - classification system according to Dr. Bertkau}, }