TY  - RPRT
TI  - Thirteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1891-1892: Part 1. Report of the director
AU  - J. W. Powell
PY  - 1892
DO  - 10.3133/ar13_1
UR  - https://pubs.usgs.gov/publication/ar13_1
ID  - ar13_1
ER  -