Bourne, Charles P. A history of online information services, 1963-1976 / Charles P. Bourne and Trudi Bellardo Hahn. — Cambridge, Massachusetts; London, England: MIT Press, 2003. — 1 PDF (xvi, 493 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=6267373>. — Текст: электронный
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