| 1.
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図書
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Donald E. Walker, editor ; with contributions by Barbara J. Grosz ... [et al.]
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| 2.
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図書
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Congress directors James H. Burrows ; executive managers Edward M. Bennett ; technical program Joseph Spiegel, chairman, Donald E. Walker, cochairman
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| 3.
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図書
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sponsored by the International Joint Conference on Artificial Intelligence ; edited by Donald E. Walker and Lewis M. Norton
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