Caroline Castle Books

For every child

By Caroline Castle

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Rosie Pugh and the great clothes war

By Caroline Castle

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Desperate to impress the stylish Tamara, a new girl at school, twelve-year-old Rosie becomes so obsessed with getting some new jeans that she drives her mother crazy, neglects her best friend, and...

The Big Fuzzy

By Caroline Castle

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Snip Snap Croc Qeb Storytime

By Caroline Castle

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The Big Fuzzy Qeb Storytime

By Caroline Castle

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Big Fuzzy BAFed

By Caroline Castle

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Tales of Beauty and Cruelty

By Caroline Castle, Kate Petty

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The big fuzzy

By Caroline Castle

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SNIP SNAP CROC

By Caroline Castle

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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.