@misc{_Nature_1884-1885, year={1884-1885}, rights={Domena publiczna (Public domain)}, publisher={Macmillan and Co.}, language={eng}, title={Nature : a Weekly Illustrated Journal of Science. Volume 31, 1885 April 30, [No. 809]}, type={czasopismo}, keywords={nauki matematyczno-przyrodnicze, nauka}, }