Limited (search only) 1982
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Northwestern University
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Limited (search only) 1982-90
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University of California
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Limited (search only) 1983
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Northwestern University
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Limited (search only) 1984
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Northwestern University
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Limited (search only) 1984
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University of Illinois at Urbana-Champaign
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Limited (search only) 1985
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Northwestern University
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Limited (search only) 1985
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University of Illinois at Urbana-Champaign
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Limited (search only) 1986
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Northwestern University
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Limited (search only) 1986
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University of Illinois at Urbana-Champaign
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Limited (search only) 1987
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University of Illinois at Urbana-Champaign
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Limited (search only) 1988
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University of Illinois at Urbana-Champaign
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Limited (search only) 1989
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University of Illinois at Urbana-Champaign
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Limited (search only) 1990
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University of Illinois at Urbana-Champaign
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Limited (search only) 1991
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University of California
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Limited (search only) 1991
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University of Illinois at Urbana-Champaign
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Limited (search only) 1992
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University of Illinois at Urbana-Champaign
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Limited (search only) 1992-93
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University of California
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Limited (search only) 1993
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University of Illinois at Urbana-Champaign
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Limited (search only) 1994
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University of Illinois at Urbana-Champaign
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Limited (search only) 1994-96
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University of California
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Limited (search only) 1995
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University of Illinois at Urbana-Champaign
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Limited (search only) 1996
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University of Illinois at Urbana-Champaign
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