本世纪中叶以来，随着社会信息化、信息社会化浪潮在世界范围的兴起，信息的战略地位与重要作用日渐为人们所认识。人类的信息量也急剧增加，作为社会信息存贮与传递工具的文献也迅速增长，不仅数量庞大，而且类型复杂。这使得世界上任何一个文献信息机构都不可能将其搜罗无遗 Since the middle of this century, with the social information and the wave of information socialization rising in the world, the strategic status and important role of information have become increasingly recognized. The amount of human information also increased sharply, and the literature as a tool for storing and transmitting social information also increased rapidly, not only in large numbers but also in complex types. This makes it impossible for any of the world’s literature and information agencies to collect it