Limited (search only) no.1-5 1971-1973
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University of Michigan
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Limited (search only) no.6-11 1974-1984
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University of Michigan
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Limited (search only) no.12-15 1984-1988
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University of Michigan
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Limited (search only) no.17-20 1989-1990
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University of Michigan
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Limited (search only) NO.19-26 1990-95
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University of Texas at Austin
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Limited (search only) no.20 1990
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Indiana University
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Limited (search only) no.21-25 1990-1994
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University of Michigan
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Limited (search only) no.21 1990
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Indiana University
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Limited (search only) no.22 1991
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Indiana University
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Limited (search only) no.23-26 1993-1995
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Indiana University
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Limited (search only) no.26 1994
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University of Michigan
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Limited (search only) no.28-30 1999-2001
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University of Michigan
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Limited (search only) NO.28-30 1999-2001
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University of Texas at Austin
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