天涯海角一点通：电报和电话发明的故事-九九云书库

天涯海角一点通：电报和电话发明的故事

作者：管成学赵骥民

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mobi/epub/pdf/awz3

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科学技术 >> 科普读物

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内容简介:

“天涯海角一点通——电报和电话发明的故事”是“世界五千年科技故事丛书”之一，由陶路、刘金江编著。“天涯海角一点通——电报和电话发明的故事”介绍了电报和电话发明的故事。

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0.441723s