@misc{Stose_George_Willis_(1869-1960)_Bulletin,
 author={Stose, George Willis (1869-1960) and Jonas, Anna Isabel (1881-1974)},
 copyright={Biblioteka Politechniki Gdańskiej},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 title={Bulletin 840. Geology and mineral resources of the Middletown Quadrangle, Pennsylvania},
 type={czasopismo},
 keywords={geologia, mineralogia, czasopisma, Pensylwania (Stany Zjednoczone ; stan), Stany Zjednoczone},
}