@misc{_Nature_1920, year={1920}, rights={Domena publiczna (Public domain)}, description={brak nr 2669, 2670, 2677}, publisher={Macmillan and Co.}, language={eng}, title={Nature : a Weekly Illustrated Journal of Science. Volume 106, 1920 December 2, [No. 2666]}, type={czasopismo}, keywords={nauki matematyczno-przyrodnicze, nauka}, }