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Scientist, professor, and environmental and community activist was an inspiration to many young people

Puerto ricoUnited statesUniversity of massachusettsHelen witton gjessingJean siossErland jonathan gjessingJames mccarthyHelen gjessingDavid wittonFrederick gjessingKathleen mccarthyIlsa kirchoffCraig kirchoffEric kirchoffFrederick cheney gjessingCatherine gjessing