I've a few more points about the use of cross-reference slips and out cards and when to transfer old material so that the files don't become over crowded.
I've a few more points about the use of cross-reference slips and out cards and when to transfer old material so that the files don't become over crowded.
还有几点，是有关使用相互参照条和借出卡的问题以及何时转移旧资料以免卷中文件过多的问题。