TY - RPRT TI - Pushpoint sampling for defining spatial and temporal variations in contaminant concentrations in sediment pore water near the ground-water/surface-water interface AU - Marc J. Zimmerman AU - Andrew J. Massey AU - Kimberly W. Campo PY - 2005 DO - 10.3133/sir20055036 UR - https://pubs.usgs.gov/publication/sir20055036 ID - sir20055036 ER -