Glen Duncan Books

A veil of melancholy has fallen over Jacob Marlowe. He's the last of his kind. Hunted by his enemies and haunted by his past, he is worn out by centuries of decadence and debauchery, and by the dem...

By blood we live

By Glen Duncan

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"From the author of the best sellers The Last Werewolf and Talulla Rising, the hair-raising conclusion to the saga that has galvanized readers' imaginations: an electrifying, startlingly erotic lov...

Le dernier loup garou

By Glen Duncan

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Moi Lucifer

By Glen Duncan

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Obsession. Ein erotischer Roman.

By Glen Duncan

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The Bloodstone Papers: A Novel

By Glen Duncan

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A Day and a Night and a Day

By Glen Duncan

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A Day and a Night and a Day

By Glen Duncan

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The Bloodstone Papers

By Glen Duncan

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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.