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  1. 1

    [Beyond the horizon]

    出版 1986
    Visual Material

    [Beyond the horizon]
  2. 2

    Number words and number symbols a cultural history of numbers 由 Menninger, Karl 1898

    出版 1969
    图书

    Number words and number symbols a cultural history of numbers
  3. 3

    The finger abacus 由 Bulatao, Jaime

    出版 1966
    图书

    The finger abacus
  4. 4

    The supreme calculator 由 Crescini, Jose Adrillano

    出版 1951
    图书

    The supreme calculator
  5. 5

    Of microcomputers, the abacus and geniuses. 由 Lichauco, Josefina T.

    文件

    Of microcomputers, the abacus and geniuses.

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