Showing 1 - 2 results of 2 for search 'Opper, Sylvia', query time: 0.01s Refine Results
  1. 1
    Piaget's theory of intellectual development
    by Ginsburg, Herbert
    Published 1979
    Other Authors:
    Book
  2. 2
    Piaget y la teoría del desarrollo intelectual
    by Ginsburg, Herbert
    Published 1977
    Other Authors:
    Book

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