New book Politics, economy and society What is the underground tunnel that takes in the flood water? What is the technology that makes the inbound and outbound subway lines at the same time? Railways in general
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Japanese title: 新書 鉄道 みんなが知りたい地下の秘密 洪水時のあふれた水を取り込む地下トンネルとは?地下鉄の上り線と下り線を同時につくる技術とは? 鉄道全般