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      Equivalences Among Relational Expressions with the Union and Difference Operators

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      Journal of the ACM
      Association for Computing Machinery (ACM)

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          Author and article information

          Journal
          Journal of the ACM
          J. ACM
          JACM
          Association for Computing Machinery (ACM)
          00045411
          October 1 1980
          : 27
          : 4
          : 633-655
          Article
          10.1145/322217.322221
          9fcf826b-3c43-45bc-9dde-2bb0182b892e
          © 1980
          History

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