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1913年11月22日

1分钟阅读

探讨五角星，鲸鱼正在消失吗？以及更多

作者：约翰·P·罗宾逊

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More by John P. Robinson

This article was originally published with the title “To Strike the Pentagram, Is the Whale Disappearing ?, and more” in 大众科学 Magazine Vol. 109 No. 21 (November 1913), p. 394
doi:10.1038/scientificamerican11221913-394

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