Stahl, Gerry. Group cognition: computer support for building collaborative knowledge / Gerry Stahl. — Cambridge, Massachusetts; London, England: MIT Press, 2006. — 1 PDF (viii, 510 p.): ill. — (Acting with technology). — Доступ по паролю из сети Интернет (чтение, печать). — Mode of access: World Wide Web. — <URL:https://ieeexplore.ieee.org/xpl/bkabstractplus.jsp?bkn=6267340>. — Текст: электронный
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