TY  - RPRT
TI  - A graphical kernel system (GKS) version of computer program MODPATH-PLOT for displaying path lines generated from the U.S. Geological Survey modular three-dimensional ground-water flow model
AU  - D.W. Pollock
PY  - 1990
DO  - 10.3133/ofr89622
UR  - https://pubs.usgs.gov/publication/ofr89622
ID  - ofr89622
ER  -