@misc{_Nature_1873,
 year={1873},
 rights={Domena publiczna (Public domain)},
 publisher={Macmillan and Co.},
 language={eng},
 type={czasopismo},
 title={Nature : a Weekly Illustrated Journal of Science. Volume 9, 1873 November 20, [No. 212]},
 keywords={nauki matematyczno-przyrodnicze, nauka},
}