TY - RPRT TI - Chemometric comparison of polychlorinated biphenyl residues and toxicologically active polychlorinated biphenyl congeners in the eggs of Forster's Terns ( Sterna fosteri ) AU - Ted R. Schwartz AU - David L. Stalling PY - 1991 DO - 10.1007/bf01055903 UR - https://pubs.usgs.gov/publication/70178159 ID - 70178159 ER -