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  1. 1

    Readings in psychology per Hartley, Eugene Leonard 1912-, Hartley, Ruth Edith 1909-

    Publicat 1965
    Llibre

    Readings in psychology
  2. 2

    Outside readings in psychology per Hartley, Eugene Leonard 1912- , ed

    Publicat 1957
    Llibre

    Outside readings in psychology
  3. 3

    Understanding children's play per Hartley, Ruth Edith 1909-

    Publicat 1952
    Llibre

    Understanding children's play

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