TY  - RPRT
TI  - U. S. G. S. MODULAR GROUND-WATER FLOW MODEL: DESIGNED TO BE UNDERSTOOD AND ADAPTED.
AU  - Michael G. McDonald
AU  - Arlen W. Harbaugh
PY  - 1985
UR  - https://pubs.usgs.gov/publication/70013336
ID  - 70013336
ER  -