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"Dr. John R. Brown, a professor at the University of Toronto who studied the effects of pesticides on workers in the Holland Marsh, died Saturday at the age of 57. In April this year Dr. Brown warned than an important (missing part of the article). Dr. Brown qualified as a medical doctor in London, England, in 1953. He received a PhD in applied physiology. After coming to Canada in 1959 he lectured at the University of Toronto in science, environmental health, and industrial health. Dr. Brown was blind in one eye since childhood and became almost totally blind in 1969, but he continued to work with the help of his wife, Helena, and son, David Bartholomew. He was the author of four technical books, president of the Health League of Canada, and chairman of the national committee of employment for the Canadian National Institute for the Blind."