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61
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62
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63
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64
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65
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66
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69
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70Shu xue de shen mi yu qi qu = Mysteries & amusement in mathematics.數學的神秘與奇趣 = Mysteries & amusement in mathematics.Published 1986Book
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71
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72
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73
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74
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75
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76
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77
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78
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79
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80