5 results Refine Results
  1. 1
    by Barton, David, 1951-
    Published 2008
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    Beta mathematics /
  2. 2
    by Barton, David, 1951-
    Published 2019
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    Beta mathematics /
  3. 3
    by Barton, David, 1951-
    Published 2002
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    Delta mathematics /
  4. 4
    by Barton, David, 1951-
    Published 2013
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    Delta mathematics : NCEA level 3 /
  5. 5
    by Barton, David, 1951-
    Published 2012
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    Theta dimensions : NCEA level 2 /

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