TY  - RPRT
TI  - Documentation for the “XT3D” option in the Node Property Flow (NPF) Package of MODFLOW 6
AU  - Alden M. Provost
AU  - Christian D. Langevin
AU  - Joseph D. Hughes
PY  - 2017
DO  - 10.3133/tm6a56
UR  - https://pubs.usgs.gov/publication/tm6A56
ID  - tm6A56
ER  -