Margaret Donaldson Books

In wartime London, an English girl and Polish twin brothers suspect the girl's uncle of spying for the Germans and must undergo many dangers and difficulties before finding out the truth.

Margery Mo

By Margaret Donaldson, Debi Gliori

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R D Level One Blue Record Sheets Set of 24

By Margaret Donaldson, Jessie Reid

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Fact and Story

By Margaret Donaldson, Jessie Reid

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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.