1.

図書
図書
1. Computers in education : proceedings of the IFIP TC-3 3rd World Conference on Computers in Education, Lausanne, Switzerland, July 27-31, 1981
edited by Bob Lewis, Donovan Tagg
出版情報: Amsterdam ; New York : North-Holland Pub. Co. , New York : Sole distributors for the U.S.A. and Canada, Elsevier North-Holland, c1981
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2.

図書
図書
2. Computers in education : proceedings of the IFIP 2nd World Conference (: American Elsevier ; : North-Holland)
edited by O. Lecarme and R. Lewis ; [organized by L'Association française de cybernétique économique et technique, et al.]
出版情報: Amsterdam : North-Holland Pub. Co. , New York : American Elsevier Pub. Co., 1975
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