TY  - RPRT
TI  - Ground-water levels and directions of flow in the vicinity of a well field, Elkhart, Indiana, December 1989
AU  - R.F. Duwelius
AU  - Lee R. Watson
PY  - 1992
DO  - 10.3133/ofr9255
UR  - https://pubs.usgs.gov/publication/ofr9255
ID  - ofr9255
ER  -