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  1. 1
    An analysis of types of exercises in plane geometry texts in the United States from 1878 to 1966 /
    by Pruitt, Ralph Lewis
    Published 1969
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  2. 2
    Polar reciprocation with respect to non degenerate conics
    by Pruitt, Ralph Lewis
    Published 1947
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  3. 3
    An analysis of types of exercises in plane geometry texts in the United States from 1878to 1966
    by Pruitt, Ralph Lewis
    Published 1969
    Get full text
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