超期以及如何解决它,是过去几年来北卡罗利纳州公共图书馆员们热烈讨论的话题之一。随着经费的缩减,图书馆员似乎更加自觉和更加认真地对待超期问题。图书馆员采取合法行动,制止那些严重的超期者,以便发挥馆藏的作用,或者采取其它一些新的带有“强制”性的立场。最近,这一系列决定巳经成为图书馆的新闻。然而,我们却几乎没有找出任何有力的(或软弱的)数据,以此说明这些措施是否比那些传统的“友好联系”方法更加有效。1981年10月,笔者进行了一项研究(见图表), Expiring and how to fix it is one of the topics that the public librarians in North Carolina have had a heated discussion over the past few years. As funds have shrunk, librarians seem to be more conscious and take the issue of overdue issues more seriously. Librarians take legal action to stop those serious overdates in order to play their part as collections or to take some other new “coercive” positions. Recently, this series of decisions has become the library news. However, we have scarcely found any strong (or weak) data to show whether these measures are more effective than the traditional “friendly link” approaches. In 1981 October, I conducted a study (see chart),