Douglas Hill Books

Supernatural Signet

By Douglas Hill, Pat Williams

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NORTHERN IRELAND.

By Douglas A. Hill

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When a space craft carrying twelve youthful offenders, who have in someway rebelled against the Earth's harshly authoritarian society, crash lands on an alien planet, the six survivors must contend...

The Caves of Klydor

By Douglas Hill

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Exiles of ColSec

By Douglas Hill

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The Caves of Klydor

By Douglas Hill

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Blade of the Poisoner

By Douglas Hill

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World of the Stiks

By Douglas Hill

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The Moons of Lannamur

By Douglas Hill

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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.