Zhongquan Du Books

Nan yang Hua zong

By Aimei Chen, Zhongquan Du

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Lao Bin cheng lao sheng huo

By Zhongquan Du

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On Penang history, social life and customs.

Lao Bing cheng lu zhi ming

By Zhongquan Du

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History of street names in Pulau Pinang, Malaysia.

Dao cheng de na xie shi er

By Zhongquan Du

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Malaysian essays (Chinese).

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.