Börge Hellström Books

FROM THE NEW YORK TIMES BESTSELLING AUTHORS OF THREE SECONDS... Detective Superintendent Ewert Grens of THREE SECONDS returns in a riveting mystery that centers on perhaps the most controversial su...

Cell 8

By Anders Roslund

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Three seconds

By Anders Roslund

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Pen 33

By Anders Roslund

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Serial killer and child molester Bernt Lund escapes from prison custody, leading Detective Superintendent Ewert Grens to the most disturbing case of his career. Bernt Lund is an unrepentant child...

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.