TY - RPRT TI - Semiquantitative spectrographic analyses of samples from parts of Chesapeake, Delaware, and Hudson estuaries AU - James Patrick Owens AU - Karl Stefansson AU - Leslie A. Sirkin PY - 1973 DO - 10.3133/ofr73216 UR - https://pubs.usgs.gov/publication/ofr73216 ID - ofr73216 ER -