Limited (search only) v.1(1964)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.2 NO.1(1965)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.3:no.2-3 1966
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University of Minnesota
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Limited (search only) v.3(1966)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.4(1967)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.6 NO.1(1969)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.7:no.1 1970
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University of Minnesota
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