TY  - RPRT
TI  - A computer program to convert raw Pb-U-Th isotope ratios to blank-corrected isotope ratios and concentrations, with associated errors and error-correlations
AU  - K.R. Ludwig
PY  - 1982
DO  - 10.3133/ofr82820
UR  - https://pubs.usgs.gov/publication/ofr82820
ID  - ofr82820
ER  -