- 1979[subject unknown]Other Research Personnel
- 1980[subject unknown]Other Research Personnel
- 1983[subject unknown]Other Research Personnel
- 1989[subject unknown]Other Research Personnel
- 1990[subject unknown]Other Research Personnel
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- 1999[subject unknown]Other Research Personnel
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- 2005[subject unknown]Other Research Personnel
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- 2009[subject unknown]Other Visiting Research Personnel
- 2010[subject unknown]Other Visiting Research Personnel
- 2011[subject unknown]Other Whitman Center Personnel
- 2012[subject unknown]Other Whitman Center Personnel
- 2015[subject unknown]Whitman Center Associate