Dalzell, Frederick. Engineering invention: Frank J. Sprague and the U.S. electrical industry / Frederick Dalzell. — Cambridge, Massachusetts; London, England: MIT Press, 2010. — 1 PDF (xii, 288 p.): ill. — Доступ по паролю из сети Интернет (чтение, печать). — Mode of access: World Wide Web. — <URL:https://ieeexplore.ieee.org/xpl/bkabstractplus.jsp?bkn=6267361>. — Текст: электронный
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