TY  - RPRT
TI  - Determination of nanogram amounts of bismuth in rocks by substoichiometric isotope dilution analysis
AU  - L. Paul Greenland
AU  - E.Y. Campbell
PY  - 1972
DO  - 10.1016/s0003-2670(01)81895-x
UR  - https://pubs.usgs.gov/publication/70009753
ID  - 70009753
ER  -