@misc{_Nature_1931, year={1931}, rights={Domena publiczna (Public domain)}, description={Zawiera: Supplement to Nature. 1931 September 12, No. 3228}, publisher={Macmillan and Co.}, language={eng}, title={Nature : a Weekly Illustrated Journal of Science. Volume 128, 1931 September 12, [No. 3228]}, type={czasopismo}, keywords={nauki matematyczno-przyrodnicze, nauka}, }