TY  - RPRT
TI  - Mantle helium and carbon isotopes in Separation Creek geothermal springs, Three Sisters area, central Oregon: Evidence for renewed volcanic activity or a long term steady state system?
AU  - M. C. Van Soest
AU  - B. M. Kennedy
AU  - William C. Evans
AU  - Robert H. Mariner
PY  - 2002
UR  - https://pubs.usgs.gov/publication/70023904
ID  - 70023904
ER  -