Guo Hai Dong Books

San tian du dong xin li xue

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Ben shu jie shao le qing xu xin li xue, Shuo hua xin li xue, She jiao xin li xue, Ai qing xin li xue, Zhi chang xin li xue deng nei rong.

Ka nai ji da quan ji

By Guo Hai Dong, Li Yi Ming, Dale Carnegie

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Ka nai ji li zhi quan ji

By Guo Hai Dong, Li Yi Ming

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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.