TY  - RPRT
TI  - PHREEQE : a computer program for geochemical calculations
AU  - David L. Parkhurst
AU  - Donald C. Thorstenson
AU  - Niel Plummer
PY  - 1980
DO  - 10.3133/wri8096
UR  - https://pubs.usgs.gov/publication/wri8096
ID  - wri8096
ER  -