John Connolly Books

The burning soul

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Randall Haight has a secret: when he was a teenager, he and his friend killed a 14-year-old girl. Randall did his time and built a new life in the small Maine town of Pastor's Bay, but somebody has...

The burning soul

By John Connolly

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The burning soul

By John Connolly

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The Book of Lost Things

By John Connolly

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Black Angel

By John Connolly

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Nocturnes

By John Connolly

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Unquiet

By John Connolly

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Black Angel

By John Connolly

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Book of Lost Things

By John Connolly

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Gates

By John Connolly

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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.