Limited (search only) v.1(1970)
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University of Illinois at Urbana-Champaign
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Limited (search only) no.3-8
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University of Michigan
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Limited (search only) v.3(1975)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.5(1980)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.6(1982)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.7(1983)
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University of Illinois at Urbana-Champaign
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Limited (search only) no.9-10
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University of Michigan
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Limited (search only) v.18(1996)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.19(1997)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.20(1998)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.21(1999)
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University of Illinois at Urbana-Champaign
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Limited (search only) 1979,no.4
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Indiana University
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Limited (search only) 1980,no.5
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Indiana University
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Limited (search only) 1982,no.6
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Indiana University
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Limited (search only) 1983,no.7
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Indiana University
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Limited (search only) 1984,no.8
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Indiana University
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Limited (search only) 1985,no.9
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Indiana University
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Limited (search only) 1986,no.10
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Indiana University
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