@misc{Barnett_V._H._Bulletin,
 author={Barnett, V. H.},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={czasopismo},
 title={Bulletin 641-H. Geology of the Hound Creek district of the Great Falls Coal Field Cascade County, Montana},
 keywords={geologia, czasopisma, mineralogia, Stany Zjednoczone, Montana (Stany Zjednoczone ; stan)},
}