David obtained a Ph.D. at the University of Wisconsin-Madison in 1963. The next 33 years were spent as a professor in the Dairy Science Department at the University of Wisconsin, where he taught 10,228 students.
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David obtained a Ph.D. at the University of Wisconsin-Madison in 1963. The next 33 years were spent as a professor in the Dairy Science Department at the University of Wisconsin, where he taught 10,228 students.