过去买旧书的人,开手时总得先备一两种目录书作参考,如郘亭书目和四库目录标注之类。等到收书渐多,觉得这种入门的参考书不够用了,不能不添购若干公私藏家的目录,不过还是很难遇见可以满足版本鉴别需要的参考书。黄丕烈曾刻过一部《季沧苇藏书目》,在跋文里说的一番话大抵可以说明藏书家的心事: People who bought old books in the past should always prepare one or two catalog books for reference at first hand, such as the catalogs of Tingting bibliographies and the four library catalogs. Wait until the book more and more, I think this entry-level reference is not enough, and can not buy a number of public and private collectors directory, but still difficult to meet to meet the needs of version identification reference book. Huang Pi Lie had carved a “quarter Cang Wei bibliography,” said something in postscript can probably explain the thoughts of the bibliophiles: