TY - RPRT TI - Biomarkers of contaminant exposure in common terns and black-crowned night herons in the Great Lakes AU - D. J. Hoffman AU - G. J. Smith AU - Barnett A. Rattner PY - 1993 DO - 10.1002/etc.5620120615 UR - https://pubs.usgs.gov/publication/5222826 ID - 5222826 ER -