Full view 1984: Dec
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University of Illinois at Urbana-Champaign
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Full view 1985
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University of Illinois at Urbana-Champaign
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Full view 1986
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University of Illinois at Urbana-Champaign
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Full view 1986:Dec
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University of Illinois at Urbana-Champaign
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Full view 1987
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University of Illinois at Urbana-Champaign
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Full view 1988
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University of Illinois at Urbana-Champaign
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Full view 1988:Dec
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University of Illinois at Urbana-Champaign
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Full view 1989
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University of Illinois at Urbana-Champaign
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Full view 1990
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University of Michigan
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Full view 1990
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University of Illinois at Urbana-Champaign
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Full view 1991:SUPP.
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University of Illinois at Urbana-Champaign
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Full view 1991
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University of Illinois at Urbana-Champaign
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Full view 1993
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University of Michigan
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Full view 1993:Dec.
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Harvard University
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Full view 1993:SUPP.
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University of Illinois at Urbana-Champaign
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Full view 1994
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Cornell University
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