TY  - RPRT
TI  - Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho
AU  - A. J. Hansen
PY  - 1993
DO  - 10.3133/ofr91532
UR  - https://pubs.usgs.gov/publication/ofr91532
ID  - ofr91532
ER  -