TY  - RPRT
TI  - Importance of closely spaced vertical sampling in delineating chemical and microbiological gradients in groundwater studies
AU  - R. L. Smith
AU  - R.W. Harvey
AU  - D.R. LeBlanc
PY  - 1991
DO  - 10.1016/0169-7722(91)90032-v
UR  - https://pubs.usgs.gov/publication/70016696
ID  - 70016696
ER  -