@misc{_Mineral,
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={United States Geological Survey},
 language={eng},
 type={czasopismo},
 title={Mineral Resources of the United States 1912/1913 Part 1: A, 6-13, 15-26},
 keywords={Mineralogia, czasopisma},
}