@misc{_Nature_1917, year={1917}, rights={Domena publiczna (Public domain)}, description={brak nr 2489}, publisher={Macmillan and Co.}, language={eng}, title={Nature : a Weekly Illustrated Journal of Science. Volume 99, 1917 August 9, [No. 2493]}, type={czasopismo}, keywords={nauki matematyczno-przyrodnicze, nauka}, }