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笔者对本馆读者1991年11月至1995年4月,利用（包括外借、阅览、复印）本馆馆藏外文期刊情况进行了不同年代的统计确定,本馆馆藏外文期刊的文献“半衰期”为3.6年,即本馆读者现在利用的外文期刊的50％是最近3.6年出版的,本馆近4～5年的馆藏外文期刊利用率较高,可将期刊陈列于外文期刊阅览室,以便于读者使用。同时,可考虑对这部分期刊实行限制借阅期等措施,以保证期刊的流通率和满足率。
The author of the library readers from November 1991 to April 1995, the use of (including borrowing, reading, photocopying) the collection of foreign language periodicals carried out statistics of different ages, the museum collection of foreign literature literature “half-life” is 3.6 years, that is, 50% of the foreign journals currently used by the readers of the main library are published in the latest 3.6 years. The library has a relatively high utilization rate of the foreign-language periodicals in the past 4-5 years. The periodicals can be displayed in the reading room of foreign periodicals in order to facilitate Readers use. At the same time, we can consider this part of the periodicals and other restrictions on the loan period and other measures to ensure circulation and satisfaction rate of journals.