Subtraction: current methods of instruction in the United States

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Date Issued
1932
Author(s)
Allen, Blanche Marion
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https://hdl.handle.net/2144/17649
Description
Thesis (M.A.)--Boston University, 1932. This item was digitized by the Internet Archive.
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Based on investigation of the BU Libraries' staff, this work is free of known copyright restrictions
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