@misc{Łempicki_Michał_(1856-1930)_Plastovaja,
 author={Łempicki, Michał (1856-1930)},
 howpublished={online},
 publisher={Kartograficeskoje Zavedene A Il'ina},
 language={rus},
 title={Plastovaja karta pol'skago kamennougol'nago bassejna},
 type={mapa},
}