1. Trends in concentrations of polychlorinated biphenyls in fish tissue from selected sites in the Delaware River basin in New Jersey, New York, and Pennsylvania, 1969-98 Author/Creator: Riva-Murray, Karen Publication/Creation: [Denver, Colo.] : [U.S. Dept. of the Interior, U.S. Geological Survey], [2003] Resource Type: Book Access & Availability: Loading
2. Trends in concentrations of polychlorinated biphenyls in fish tissue from selected sites in the Delaware River basin in New Jersey, New York, and Pennsylvania, 1969-98 Author/Creator: Riva-Murray, Karen Publication/Creation: [Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading