@misc{Simmons_Orville_Logan_(1870–1917)_Development_1894, author={Simmons, Orville Logan (1870–1917)}, copyright={Public Domain}, address={Massachusetts}, journal={Publications of famous biologists - a collection of prints}, howpublished={online}, year={1894}, publisher={Charles Hyde Olmstead Fund.}, language={eng}, title={Development of the lungs of spiders}, type={Text}, URL={http://www.rcin.org.pl/Content/118061/PDF/s996.pdf}, keywords={Spiders - pulmonary organs - gill leaves - trachea - stages of organ development}, }