Limited (search only) v.9-10 1967-68
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University of Colorado Boulder
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Limited (search only) v.11 1969
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University of Colorado Boulder
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Limited (search only) v.12-18 (Bd w/o 12:1)(1970-1976)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.12 1970
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University of Colorado Boulder
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Limited (search only) v.13 1971
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University of Colorado Boulder
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Limited (search only) v.14 1972
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University of Colorado Boulder
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Limited (search only) v.15 1973
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University of Colorado Boulder
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Limited (search only) v.16 1974
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University of Colorado Boulder
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Limited (search only) v.17 1975
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University of Colorado Boulder
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Limited (search only) v.18 1976
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University of Colorado Boulder
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Limited (search only) v.19 1977
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University of Colorado Boulder
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Limited (search only) v.20 1978
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University of Colorado Boulder
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Limited (search only) v.23:1-6(1981)
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University of Illinois at Urbana-Champaign
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Limited (search only) v.23 1981
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University of Colorado Boulder
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