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Viggo P. Hansen

3 published titles

Essential skills for arithmetic

(Contributor)

1 edition

  • ISBN: 0471815055
  • Wiley
  • 1987
  • Details

Essential skills for algebra

(Contributor)

1 edition

  • ISBN: 0471816248
  • Wiley
  • 1987
  • Details

Essential skills for intermediate algebra

(Contributor)

1 edition

  • ISBN: 0471827800
  • Wiley
  • 1987
  • Details

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