Library catalog, union catalog, index, abstract, table of contents, selective dissemination of information and document delivery service are the indispensable tools and services for using periodical literature. Traditionally, they are produced and provided by individual library, indexing and abstracting institute and information provider respectively. From 1988, CARL System Inc. began to integrate all of them in one system and named UnCover and UnCover2. This innovation is very successful and becomes a new paradigm for processing and using periodical literature. This article describes the innovation.
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第三屆英語文教學研究與電腦資訊研討會論文集=A Collection of Papers Presented in the Third Conference of English Teaching/Research and Computer Information，頁13-28
