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1926年10月1日

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山姆大叔，挥霍者--V

煤炭的开采、销售和使用中的浪费，以及补救措施

作者：J. 伯纳德·沃克

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More by J. Bernard Walker

This article was originally published with the title “Uncle Sam, Spendthrift--V” in 大众科学 Magazine Vol. 135 No. 4 (October 1926), p. 270
doi:10.1038/scientificamerican1026-270

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