@misc{_Nature_1904,
 year={1904},
 rights={Domena publiczna (Public domain)},
 publisher={Macmillan and Co.},
 language={eng},
 type={czasopismo},
 title={Nature : a Weekly Illustrated Journal of Science. Volume 70, 1904 June 30, [No. 1809]},
 keywords={nauki matematyczno-przyrodnicze, nauka},
}