@misc{Hall_George_Martin_(1891-1941)_Bulletin,
 author={Hall, George Martin (1891-1941) and Thom, William Taylor (1891-1979) and Wegemann, Carroll Harvey (1879-?) and Moulton, Gail Francis (1898-1974)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 title={Bulletin 856. Geology of Big Horn County and the Crow Indian Reservation, Montana : with special reference to the water, coal, oil, and gas resources},
 type={journal},
 keywords={geology, mineralogy, journals, United States of America},
}