TY  - RPRT
TI  - Preconstruction and postconstruction ground-water levels, Lock and Dam 4, Red River Valley, Louisiana
AU  - A. H. Ludwig
AU  - J.E. Reed
PY  - 1979
DO  - 10.3133/ofr79921
UR  - https://pubs.usgs.gov/publication/ofr79921
ID  - ofr79921
ER  -