Truelson S D
Bull Med Libr Assoc. 1966 Jan;54(1):26-32.
Labels which do not fit on the spines of books should be placed on the upper rather than lower left corner of the front cover, because the upper corner becomes visible first when a volume is tilted from the shelf. None of the past methods of marking call numbers on the spines or covers of books-direct hand lettering by pen, brush, or stylus; affixing cold release characters; embossing by hot type; or gluing labels which are handlettered, typed, or printed-nor even present automatic data processing systems have offered all the advantages of the relatively new Se-Lin labeling system: legibility, reasonable speed of application, automatic protective covering, permanent bonding, and no need for a skilled letterer. Labels seem unaesthetic to some librarians, but their advantages outweigh this consideration. When only one or a few copies of the same call number are required, Se-Lin is the best system now available for libraries marking over 1,000 books a year.
不适合贴在书脊上的标签应贴在前封面的左上角而非左下角，因为当一本书从书架上倾斜时，左上角会首先映入眼帘。过去在书脊或封面上标注索书号的方法——用钢笔、毛笔或铁笔直接手写字母；粘贴冷剥离字符；热排版压印；或者粘贴手写、打字或印刷的标签——甚至目前的自动数据处理系统，都没有提供相对较新的Se-Lin标签系统的所有优点：易读性、合理的粘贴速度、自动保护膜、永久粘贴，而且不需要熟练的书写人员。对一些图书馆员来说，标签看起来不美观，但它们的优点超过了这一考虑因素。当只需要同一索书号的一本或几本复本时，对于每年要标记1000多本书的图书馆来说，Se-Lin是目前可用的最佳系统。
