TY - RPRT TI - Concentrations of selected trace metals in shallow cores from the tidal Potomac River and Estuary: 1978 and 1979 AU - E. Ann Martin AU - J.L. Glenn AU - C. A. Rice AU - G. Harrison AU - E. Gum AU - M. Curington PY - 1981 DO - 10.3133/ofr811175 UR - https://pubs.usgs.gov/publication/ofr811175 ID - ofr811175 ER -