TY  - RPRT
TI  - Eighteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1896-1897: Part V - Mineral resources of the United States, 1896, metallic products and coal
AU  - David T. Day
PY  - 1897
DO  - 10.3133/ar185
UR  - https://pubs.usgs.gov/publication/ar185
ID  - ar185
ER  -