Junwei Song Books

Zhongguo xian Qin bu bi tu lu

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中国钱币之收藏始于清末,滥觞于民国.纵观钱币收藏体系,可以说先秦货币是钱币收藏的重中之重.本书按照布币形制的演变加以排序,并对每一形制的布币进行了简要的描述.是一本广大钱币收藏爱好者的不可多得的参考书.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.