Harriet Castor Books

The Sleepover Club (50) - Sleepover Club Ponies

By Harriet Castor

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Sleepover Girls Go Dancing

By Harriet Castor

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The Sleepover Club (53) - Sleepover Girls Go Surfing: Summer Special

By Harriet Castor

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The Sleepover Club - Pony Passion

By Harriet Castor

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As Lyndz and her friends work on a school project about transportation used during the Victorian era, Lyndz struggles to overcome a fear of ponies after breaking her arm during a practice with one...

Fat Puss on Wheels Fat Puss and Friends

By Harriet Castor

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Milly's Golden Goal

By Harriet Castor, Castor

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80 pages : 20 cm

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.