Alan Peter Ryan Books

The Penguin Book Of Vampire Stories

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The terrifying and definitive collection of Vampire stories from the masters of literary horrorThey're lurking under the cover of darkness…and between the covers of this book. Here, in all their ho...

The bones wizard

By Alan Ryan

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The Back of Beyond

By Alan Peter Ryan

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Slave Tree

By Alan Peter Ryan

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Amazonas

By Alan Peter 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.