笔者现仅就改进《中图法》分类索书号的排列形式作一探索,期望同行批评指正。在理论上,分类索书号应由分类号、书次号、辅助区分号组成,而在实际工作中,辅助区分号用得很少,主要是由分类号与书次号构成了分类索书号。这两部分目前采用的排列形式一般是两段分两行,例如《鲁迅全集》为I210.27371 The author now only explores the improvement of the arrangement of the classification call numbers in the “CLC”, and expects colleagues to criticize and correct them. In theory, classification call number should be composed of classification number, book number, auxiliary division number, and in actual work, auxiliary division number with very little use, mainly by the classification number and book number constitute the classification call number. These two parts currently used in the arrangement is generally two sections of two lines, such as “The Complete Works of Lu Xun” is I210.27371