Limited (search only) NO.1-3 1978-80
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University of Texas at Austin
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Limited (search only) no.2 1979
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University of Virginia
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Limited (search only) NO.4-7 1981-84
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University of Texas at Austin
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Limited (search only) NO5 1982
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The Ohio State University
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Limited (search only) NO6 1983
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The Ohio State University
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Limited (search only) NO7 1984
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The Ohio State University
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Limited (search only) NO.8-10 1985-87
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University of Texas at Austin
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Limited (search only) NO8 1985
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The Ohio State University
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Limited (search only) NO9 1987
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The Ohio State University
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Limited (search only) NO10 1986
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The Ohio State University
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Limited (search only) no.10 (1987)
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University of Illinois at Urbana-Champaign
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Limited (search only) NO.11-12 1988-90
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University of Texas at Austin
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Limited (search only) no.12 (1989-1990)
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University of Illinois at Urbana-Champaign
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Limited (search only) NO.13-15 1991-93
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University of Texas at Austin
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Limited (search only) no.14 (1992)
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University of Illinois at Urbana-Champaign
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Limited (search only) NO.16-18 1994-96
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University of Texas at Austin
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Limited (search only) 1980-81 (3-4)
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University of California
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Limited (search only) 1982-86 (5-9)
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University of California
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Limited (search only) 1988 (11)
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University of California
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Limited (search only) 1991 (13)
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University of California
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Limited (search only) 1993 (15)
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University of California
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Limited (search only) 2000 (22)
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University of California
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Limited (search only) 2003 (25)
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Limited (search only) 2006 (28)
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University of California
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Limited (search only) 2007 (29)
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University of California
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