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acid activity Advancement Agriculture American American Chemical Society animals annual appears applied appointed assistant Association awarded become cent changes chemical chemistry City collected College committee complete congress continued course determined direction director discussion disease effect electrical engineering evidence experiments fact factors field four give given growth held human important increase indicated individual Institute interest International John Jour laboratory light living material means measured mechanism Medical medicine meeting ment method Michigan Museum nature observed obtained organization Pacific period physical plants possible present president problems production professor protein reaction received recent relation reported School scientific session social Society solution species structure theory tion United University various York