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  1. 1

    The Study of context an overview 由 Maron, M. E., Shoffner, R. M.

    出版 1969
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  2. 2

    An Experimental inquiry into context information processing 由 Barrett, Deborah D., Gould, Laura, Shoffner, Ralph M.

    出版 1969
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  3. 3

    Catalogs in book form a research study of their implications for the California Library and the California Union Catalog, with a design for their implementation 由 Cartwright, Kelley L., Shoffner, Ralph M.

    出版 1967
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