Hakan Ostlundh Books

Die Nacht des Propheten

By Hakan Ostlundh

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Gotland

By Hakan Ostlundh

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Infodingar

By Hakan Ostlundh

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Slake

By Hakan Ostlundh

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Terreur

By Hakan Ostlundh

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In een zomerhuis op Gotland wordt een jong stel gruwelijk vermoord aangetroffen. Beiden hebben de Zweedse nationaliteit, maar zijn afkomstig uit Egypte; ook een op de vlucht geslagen getuige komt u...

Dykaren

By Hakan Ostlundh

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Blot

By Hakan Ostlundh

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The viper

By Hakan Ostlundh

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The viper

By Hakan Ostlundh

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The intruder

By Hakan Ostlundh

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"The Intruder is an unusual story about betrayal and dark secrets. The Andersson family is being sent scary letters without a sender's name. Who could possibly want to harm them? Gotland policeman...

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.