TY  - RPRT
TI  - A geological reconnaissance in northern Idaho and northwestern Montana, with notes on the economic geology
AU  - Frank Cathcart Calkins
AU  - D. F. MacDonald
PY  - 1909
DO  - 10.3133/b384
UR  - https://pubs.usgs.gov/publication/b384
ID  - b384
ER  -