TY - RPRT TI - Seismic-reflection and sidescan-sonar data collected on the Potomac River, Maryland and Virginia, during May 1979 AU - Harley J. Knebel PY - 1981 DO - 10.3133/ofr81174 UR - https://pubs.usgs.gov/publication/ofr81174 ID - ofr81174 ER -