Determination for the modal age level for the grades IV and VI of the difficulty of the principle: colors of objects depend on what light rays they transmit, absorb, or reflect

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Date
1954
Author
Minot, John G
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http://hdl.handle.net/2144/8621
Description
Thesis (Ed.M.)--Boston University
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Based on investigation of the BU Libraries' staff, this work is free of known copyright restrictions.
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