TY  - RPRT
TI  - Professor Powell's Report of the survey of the Colorado of the West: Letter from the Secretary of the Smithsonian Institution, transmitting a report of Professor Powell on the survey of the Colorado River of the West and its tributaries
AU  - John Wesley Powell
PY  - 1874
DO  - 10.3133/70039910
UR  - https://pubs.usgs.gov/publication/70039910
ID  - 70039910
ER  -