Showing 1 - 2 results of 2 for search 'Sumner, W. L.', query time: 0.01s Refine Results
  1. 1
    The teaching of arithmetic and elemnetary mathematics
    by Sumner, W. L.
    Published 1949
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  2. 2
    Visual methods in education
    by Sumner, W. L.
    Published
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