情报用户,专题情报研究人员,文献工作者和书目学家总是希望以较小的代价(人力、经费和时间)获得最大的情报量。一般认为,三次文献是获得大量情报信息的重要情报源之一。不仅如此,这类文献由于质量高,能反映出本学科或专业的当前水平;撰稿人员都是本行的专家、学者;紧密结合当前本学科或专业大家共同关心的问题进行选题,针对性强;文末附有大量参考文献,为 Intelligence users, thematic intelligence researchers, bibliophiles and bibliophiles always want the maximum amount of intelligence at a fraction of the cost (manpower, funding and time). It is generally believed that three documents are one of the important intelligence sources for obtaining a large amount of intelligence information. Not only that, but because of their high quality, such documents can reflect the present level of the discipline or profession. The authors are all experts and scholars of the Bank. They are selected in close connection with the current issues of common interest of the discipline or profession. Strong; text attached with a large number of references for