@misc{_Mineral,
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={United States Geological Survey},
 language={eng},
 type={czasopismo},
 title={Mineral Resources of the United States 1923 Part 1: A (Summary A), [1]-28},
 keywords={Mineralogia, czasopisma},
}