Limited (search only) 1971
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University of California
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Limited (search only) 1972
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University of Illinois at Urbana-Champaign
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Limited (search only) 1972-73
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University of California
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Limited (search only) 1973:Mar.
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University of Illinois at Urbana-Champaign
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Limited (search only) 1973:June
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University of Illinois at Urbana-Champaign
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Limited (search only) 1973:Sep.
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University of Illinois at Urbana-Champaign
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University of Illinois at Urbana-Champaign
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Limited (search only) 1974:June
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University of Illinois at Urbana-Champaign
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Limited (search only) 1974
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University of Illinois at Urbana-Champaign
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Limited (search only) 1974
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University of California
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Limited (search only) 1975
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University of California
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Limited (search only) 1976
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University of California
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Limited (search only) 1977
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University of California
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Limited (search only) 1979
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University of Illinois at Urbana-Champaign
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