Wong Yiu Chung Books

One Country Two Systems in Crisis

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"In the tumultuous negotiations of the Sino-British Joint Declaration of 1984, the United Kingdom willingly signed over Hong Kong's reins to the People's Republic of China (PRC) - but did so with t...

One Country Two Systems in Crisis

By Albert H. Y. Chen, Brian Bridges, Kenneth Ka Loh Chan, Fung Ho Lup, Wong Yiu Chung

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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.