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Polychlorinated biphenyls still pose significant health risks to northwest Atlantic harbor seals http://t.co/q4vEijAsPy
Polychlorinated biphenyls still pose significant health risks to northwest Atlantic harbor seals http://t.co/q4vEijAsPy
New study finds PCBs still pose health risk to harbour seals in NW Atlantic http://t.co/nP5mxtX9fg