Martin Wolff Books

Compilation of articles arising from the authors' eight years of personal experiences, study, research and analysis of EFL teaching in China between 2002 and 2010, assisted by the opinions of 2,500...

Teaching EFL in China

By Martin Wolff

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China EFL curriculum reform

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"A compilation of articles arising from the authors' seven years of personal experiences, study, research and analysis of EFL teaching in China between 2002 and 2008."

Dissatisfied customers

By Niu Qiang

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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.