Gillian Perdue Books

Adam s Starling Red Flag

By Gillian Perdue

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Conor s Cowboy Suit O Brien Pandas

By Gillian Perdue

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Dostum Sigircik

By Gillian Perdue

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Buachaill Bo

By Gillian Perdue, Michael Connor, Gillian Perdue, Michael Connor

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Conor's parents give him a present of a cowboy suit. Conor won't take it off and starts to speak like a cowboy. His sister is ashamed of him, his friends tease him, but he doesn't care. In the end...

Conor s Canvas

By Gillian Perdue, Michael Connor

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Buachaill Bo the Witch Apprentice WBD 2010 Flipper Book

By Gillian Perdue, Michael Connor, Marian Broderick, Francesca Carabelli

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Adam s Starling

By Gillian Perdue, Barry Reynolds

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Conor s Canvas

By Gillian Perdue, Michael Connor

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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.