TY  - RPRT
TI  - Is the extraction of thorium onto MnO 2 -coated filter cartridges uniform?
AU  - Peter W. Swarzenski
AU  - M. Baskaran
PY  - 2004
DO  - 10.3133/ofr20041421
UR  - https://pubs.usgs.gov/publication/ofr20041421
ID  - ofr20041421
ER  -