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John Gray (locomotive engineer) : ウィキペディア英語版 | John Gray (locomotive engineer) John Gray was an early steam locomotive engineer who introduced several innovations in locomotive design during the 1830s and 1840s. John Gray's origins are unknown but he appears to have originated from Newcastle. ==Career==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「John Gray (locomotive engineer)」の詳細全文を読む
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