@misc{Hofmann_Carl_A,
 author={Hofmann, Carl},
 copyright={PAN Biblioteka Kórnicka},
 howpublished={online},
 publisher={Baird Henry Carey},
 language={eng},
 type={podręczniki},
 title={A practical treatise on the manufacture of paper in all its branches},
 keywords={produkcja papieru},
}