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  1. 1

    An item-analysis and validity study of the science education center elementary mathematics tests for grades 1, 2, and 3 by Vitug, Carolina P.

    Published 1976
    Visual Material

    An item-analysis and validity study of the science education center elementary mathematics tests for grades 1, 2, and 3
  2. 2

    An item-analysis and validity study of the science education center elementary mathematics tests for grades 1, 2, and 3 by Vitug, Carolina P. 1944-

    Book

    An item-analysis and validity study of the science education center elementary mathematics tests for grades 1, 2, and 3

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