Hurwitz, A. B., Epstein, D. T., & Goddard, A. (1976). More number games: Mathematics made easy through play. Funk and Wagnalls.
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Chicago-čujuhus (17. p.)
Hurwitz, Abraham B., David T. Epstein, juo Arthur Goddard. More Number Games: Mathematics Made Easy Through Play. New York: Funk and Wagnalls, 1976.
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MLA-čujuhus (9. p.)
Hurwitz, Abraham B., et al. More Number Games: Mathematics Made Easy Through Play. Funk and Wagnalls, 1976.
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