Gerard Houarner Books

Road to Hell

By Gerard Daniel Houarner, Houarner Gerard Daniel.

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The beast that was Max

By Gerard Daniel Houarner

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Dead cat bounce

By Gerard Daniel Houarner

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Inside the Works

By Gerard D. Houarner, Tom Picirilli, Edward Lee

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Dead Cat Traveling Circus of Wonders and Miracle Medicine Show

By Tim Lebbon

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Horrors Beyond

By William Jones

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Sleepers

By Gerard Houarner

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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.