Martin Jensen Books

Odour of Decay

By Martin Jensen

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The king s hounds

By Martin Jensen

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Oathbreaker

By Martin Jensen

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Halfdan and his master, Winston the Illuminator, are guests in a monastery when they're awakened in the middle of the night and asked to solve a crime. A monk praying in the church has been brutall...

En fremmed klippe

By Martin Jensen

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Traekfugle

By Martin Jensen

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Kriminalroman. Assens 1332. Fremmede hærtropper er på vej, en flok sigøjnere har slået sig ned, en brudekrone bliver stjålet og en mand myrdet under bryllupsfesten, så Eske Litle får hænderne fulde.

Magtspor

By Martin Jensen

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Kriminalroman. Assens 1332. Danmark er kastet ud i en magtkamp mellem kongsemnerne, og i den lille by er der uro. En mand findes myrdet i kirken, og byfoged Eske Litle må i gang med opklaringen, so...

Ej sa svaert

By Martin Jensen

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6-årige Kaj flytter med sine forældre og lillebror i 1953 ud i et nybygget lejlighedskompleks. Han forsøger at finde ud af, hvad det er, der foregår under overfladen på det ellers lykkelige familie...

Landet et sted

By Martin Jensen

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Oathbreaker

By Martin Jensen

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Oathbreaker

By Martin Jensen

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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.