在走向二十一世纪的时候,美国图书馆界对公共目录的新形式将会进行更多的试验。这种试验,随着目录规则的改变而显得十分重要,并随着现代技术的广泛利用而将成为可能。除了新型的卡片目录外,最初的变化形式主要会表现为计算机输出型目录(COM)联机检索型目录(on-line)和一种包含上述三种目录的混合型目录。当然,这里还没有全面设想那些可能出现的交替、变化的目录。一种熟悉的旧的工具,一定要向它的新形式发展,因此图书馆和馆员应该十分注意观察在哪里已经发生了这些变 As we approach the 21st century, the American library community will conduct more trials of the new forms of public catalogs. This kind of experiment, with the change of directory rules, is very important and will become possible with the extensive use of modern technology. In addition to the new card catalog, the initial changes were primarily computer-on-line (COM) on-line catalogs and a hybrid catalog containing the three catalogs above. Of course, there is not yet a comprehensive list of possible alternations and changes. A familiar old tool must evolve to its new form, so libraries and librarians should pay great attention to observing where these changes have taken place