TY  - RPRT
TI  - Contributions to economic geology, 1922, Part I, Metals and nonmetals except fuels--Silver enrichment in the San Juan Mountains, Colorado
AU  - E.S. Bastin
PY  - 1923
DO  - 10.3133/b735d
UR  - https://pubs.usgs.gov/publication/b735D
ID  - b735D
ER  -