@misc{Clark_Frank_Rinker_(1881-1974)_Bulletin,
 author={Clark, Frank Rinker (1881-1974)},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={czasopismo},
 title={Bulletin 691-L. Geology of the Lost Creek coal field Morgan County, Utah},
 keywords={geologia, mineralogia, czasopisma, Utah (Stany Zjednoczone ; stan)},
}