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Published online by Cambridge University Press: 02 September 2013
1. The surveys are conducted on behalf of the National Science Foundation, the U.S. Department of Education, the National Institutes of Health, the National Endowment for the Humanities, and the U.S. Department of Agriculture.
2. All data is drawn from the Summary Report 1989: Doctorate Recipients from United States Universities, Office of Scientific and Engineering Personnel, National Research Council, Washington, D.C. 1990. Graphed data is found in the Appendix, Tables A-l, A-2, and A-3.