Jonas Karlsson Books

The Room

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“The daily grind got you down? Escape into this Swedish dark comedy about a scaldingly contemptuous office drone who discovers a secret room in his workplace.”—O: The Oprah Magazi...

The Room

By Jonas Karlsson

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“The daily grind got you down? Escape into this Swedish dark comedy about a scaldingly contemptuous office drone who discovers a secret room in his workplace.”—O: The Oprah Magazi...

The Invoice

By Jonas Karlsson

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A heartfelt exploration of the cost of life and love—and the importance of the little things—from the author of the international bestseller, The Room Hilarious, profound, and achingly...

Det andra malet

By Jonas Karlsson

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Massive MIMO

By Erik Larsson, Jonas Karlsson, Fredric Kronestedt, Henrik Asplund, Sebastian Faxer

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Circus

By Jonas Karlsson

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Room

By Neil Smith, Jonas Karlsson

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Invoice

By Jonas Karlsson

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Room the Invoice and the Circus

By Jonas Karlsson

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The Invoice

By Jonas Karlsson, Shaun Grindell

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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.