@misc{Darton_Nelson_Horatio_(1865-1948)_Bulletin, author={Darton, Nelson Horatio (1865-1948)}, howpublished={online}, publisher={Government Printing Office.}, language={eng}, type={journal}, title={Bulletin 613. Guidebook of the Western United States. Part C: The Santa Fe Route with a side trip to the Grand Canyon of the Colorado}, keywords={United States of America, geology, mineralogy, journals}, }