破解美國密碼

作者：保羅·瓦利奇

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PAUL WALLICH is a staff writer for 大眾科學.

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This article was originally published with the title “Cracking the U.S. Code” in 大眾科學 Magazine Vol. 276 No. 4 (April 1997), p. 42
doi:10.1038/scientificamerican0497-42

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