Tessa Duder Books

In lane three, Alex Archer

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Fifteen-year-old Alex struggles to overcome personal trauma and hardship as she competes with her arch rival for a place on the New Zealand swimming team participating in the 1960 Olympic Games in...

The only child of a single mother, Geraldine is tired of having to fit into her mother's busy orchestra schedule but things begin to change when she discovers a new friend and an ambition to be a c...

Kawau.

By Tessa Duder

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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.