TY  - RPRT
TI  - Contributions to economic geology, 1912; Part I, Metals and nonmetals except fuels-Copper
AU  - James Madison Hill
AU  - F. L. Ransome
PY  - 1914
DO  - 10.3133/b540d
UR  - https://pubs.usgs.gov/publication/b540D
ID  - b540D
ER  -