珍本:珍贵的书籍,资料.凡不常见和颇难得的革命文献,以及具有历史意义和科学价值的古旧图书资料,都称为“珍本”.善本:凡书籍精加校勘,错讹较少者,称为“善本”.此外,旧刻本,精抄本,手稿,旧拓碑帖等,通常也都称为“善本”.孤本:仅有一份的图书,指某书的某一版本,在世间只有一份流传的.未刻印的手稿,碑帖的旧拓本,仅有一份的,也称“孤本”. Rare books, materials All rare and rare revolutionary literature, as well as historic and scientific ancient books and materials, are called “rare books.” Rare Books: All books are collated with fewer errors, Known as “rare book.” In addition, the old engraving, fine manuscripts, manuscripts, old calligraphy and other posts, often also referred to as “rare.” Alone: ​​only a book, referring to a version of a book, there is only one Copies of unverified manuscripts, rubbings of the old rubbings, only one, also known as “lonely.”