Limited (search only) 1967-76
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University of California
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Limited (search only) 1967-82
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University of Texas at Austin
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Limited (search only) 1969-76
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Pennsylvania State University
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Limited (search only) 1971 1971
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The Ohio State University
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Limited (search only) 1971-1976
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University of Illinois at Urbana-Champaign
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Limited (search only) 1977-78
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University of California
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Limited (search only) 1979-1982
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University of Illinois at Urbana-Champaign
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Limited (search only) 1980-82
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University of California
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Limited (search only) 1980 1980
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The Ohio State University
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Limited (search only) 1981 1981
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The Ohio State University
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Limited (search only) 1982 1982
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The Ohio State University
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Limited (search only) 1995
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University of California
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