Margaret Ryan Books

Roodica the rude

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"It's Roodica's birthday, but her plans are ruined when everyone is invited to a party for Magnus Maxiumus. But Roodica's not going to let that stand in her way, especially when she finds out how s...

The Catsup High Detective Agency

By Margaret Ryan

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When cats in the little town of Catsup go missing, cat detective, Malarkey, hires an assistant to help him find them. But the new kitten cop has a mind of his own. Can the pair of them work togethe...

Waverley s Birthday Present

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The HACCP Systems Manual Chandos Series on the Food Industry

By Margaret Ryan

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The HACCP Systems Manual

By Margaret Ryan

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HADA VOLADA. EL DORMITORIO MAGICO

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Hada Volada Los Juegos Olimpicos

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Tuhaf Sokak sasI Kaptan In Laneti

By Margaret Ryan

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Bay Tipp in Hazinesi

By Margaret Ryan

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Tuhaf Sokak Bayan KIng In EsrarI

By Margaret Ryan

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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.