@misc{Cross_Whitman_(1854-1949)_Bulletin,
 author={Cross, Whitman (1854-1949) and Larsen, Esper Signius (1879-1961)},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 843. A brief review of the geology of the San Juan Region of southwestern Colorado},
 keywords={geology, mineralogy, journals, United States of America},
}