@misc{Campbell_Marius_Robinson_(1858-1940)_Bulletin,
 author={Campbell, Marius Robinson (1858-1940)},
 howpublished={online},
 publisher={Government Printing Office.},
 language={eng},
 type={journal},
 title={Bulletin 611. Guidebook of the Western United States. Part A: The northern Pacific Route with a side trip to Yellowstone Park},
 keywords={geology, mineralogy, United States of America, journals},
}