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"Hartline, Haldan Keffer (1903-1983) was an American physiologist. He shared the 1967 Nobel Prize in physiology or medicine for his work on the neuro-physiology of vision."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/dictionary/famous-scientists/biologists/haldan-keffer-hartline-info.htm>