O Donnell Peter Books

A Heritage of Shadows

By O Donnell Peter

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Stormswift

By O Donnell Peter

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Tregaron's Daughter

By O Donnell Peter

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Merlin's keep

By O Donnell Peter

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Cobra Trap

By Peter O Donnell, O Donnell Peter

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Created in a 1950s comic strip that is still in syndication in more than 40 countries today, the stories of Modesty Blaise have spawned a cult following around the world. These are the first new Mo...

The Impossible Virgin: Modesty Blaise

By O Donnell Peter

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The Night of Morningstar: Modesty Blaise

By O Donnell Peter

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The Silver Mistress

By O Donnell Peter

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Last Day in Limbo

By O Donnell Peter

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Sabre Tooth

By O Donnell Peter

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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.