“布坎南，J.”的概念、定义、翻译、参考文献-科学参考

单词	布坎南，J.
释义	布坎南，J. Encyclopedia 历史学美国历史释 James Buchanan布坎南，J. （1791-04-23～1868-06-01）美国第15任总统（1857～1861）。
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