@misc{Butts_Charles_(1863-1946)_Bulletin,
 author={Butts, Charles (1863-1946) and Moore, Elwood S. (1879-1966)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 855. Geology and mineral resources of the Bellefonte Quadrangle, Pennsylvania},
 keywords={geology, mineralogy, journals, United States of America},
}