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医学索引(IM)和医学期刊近期目次的引文,其中21％是苏联文献,60％是其它国家文献,下表是外国文献的分布情况。
Citations to medical index (IM) and recent medical journals, of which 21% are from the Soviet Union and 60% from other national sources. The following table shows the distribution of foreign literature.