现《中国图书馆分类法》(以下简称《中图法》)(第四版)已面世,各图书馆正在积极地掌握和了解《中图法》(第四版)的有关问题,培训班不断举办。为了帮助各馆标引人员的培训,掌握《中图法》(第四版)的变化与使用,以及一些难点问题,帮助各单位的图书改编,本刊特邀《中图法》(第四版 Now that the Chinese Library Classification (hereinafter referred to as “CLC”) (Fourth Edition) has been published, all libraries are actively mastering and understanding the relevant issues of the CLC (Fourth Edition), and the training courses Keep organizing. In order to help the museum to guide the training of staff and master the changes and use of the “CLC” (the fourth edition), as well as some difficult issues to help the adaptation of the books of various units, Version