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She was a graduate student in the history of science at Harvard University , completing a Master of Arts in 1962 and a Ph.D. in 1966 , under I. Bernard Cohen .
 Harvard University, I. Bernard Cohen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Harvard University, I. Bernard Cohen