Hans Koppel Books

You re mine now

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Anna and Lukas have a happy marriage but when, in a moment of madness, Anna has a brief fling with Erik, a man she met at a work conference, she lives to regret more than just her infidelity. Erik...

Struggling with fear, despair, and suspicious Swedish authorities when his wife fails to return home, Mike endures a nightmarish existence with his daughter, unaware that his vigil is being secretl...

Desir mortel

By Hans Koppel

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You re mine now

By Hans Koppel

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Anna and Lukas have a happy marriage, but when, in a moment of madness, Anna has a brief fling with Erik, a man she met at a work conference, she lives to regret more than just her infidelity. Erik...

Kommer aldrig mer igen

By Hans Koppel

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Kom ska vi tycka om varandra

By Hans Koppel

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You're mine now

By Hans Koppel

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Kommer aldrig mer igen

By Hans Koppel

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Vi i villa

By Hans Koppel

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Kungens fodelsedag

By Hans Koppel

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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.