A periodical index points to citations of articles in magazines, journals and newspapers.
A periodical index points to citations of articles in magazines, journals and newspapers.
期刊索引通常包含杂志，期刊和报纸中的文章的题录。
A periodical index points to citations of articles in magazines, journals and newspapers.
期刊索引通常包含杂志，期刊和报纸中的文章的题录。