TY  - RPRT
TI  - Quality of surface waters of the United States, 1966, Parts 7 and 8, lower Mississippi River basin and western Gulf of Mexico basins
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1971
DO  - 10.3133/wsp1994
UR  - https://pubs.usgs.gov/publication/wsp1994
ID  - wsp1994
ER  -