Olivia Madden Books

The Inside Outing

By Olivia Madden, Elizabeth Laird, Deborah Ward

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The inside outing

By Elizabeth Laird

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When bad weather prevents the children from going to the beach, they turn their bedroom into a beach and pretend they are on a boat and a desert island.

Lladd gwair

By Olivia Madden

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Bwmyr Y Parot

By Olivia Madden, Maddenn

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Helfadry Sor

By Olivia Madden, Joshua Jones

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Buried Treasure Joshua Jones

By Olivia Madden, Bob Wilson

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Snake Chase Joshua Jones

By Olivia Madden

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Tortoise Trail Joshua Jones

By Olivia Madden

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Going Haywire Joshua Jones

By Olivia Madden, Bob Wilson, The County Studio

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Photo Finish Joshua Jones

By Olivia Madden

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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.