Martin Kongstad Books

Am I cold

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Copenhagen, 2008. Excess is in, austerity is out. The international crash is about to send everything tumbling down but everyone's too wasted to notice. And Mikkel Vallin's own bubble has already b...

Dengang i 80 erne

By Martin Kongstad

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Casper

By Martin Kongstad

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Am I Cold

By Martin Aitken, Martin Kongstad

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Am I cold

By Martin Kongstad

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Han danser pa sin sons grav

By Martin Kongstad

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Fryser jeg

By Martin Kongsted

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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.