Johan Theorin Books

The Voices Beyond Oland Quartet

By Howard Hughes

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The asylum

By Johan Theorin

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Echoes from the dead

By Johan Theorin

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The quarry

By Johan Theorin

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L heure trouble

By Johan Theorin

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Stenvik, sur l'île suédoise d'Öland, septembre 1972. Jens Davidsson, six ans, échappe à la vigilance de sa grand-mère, se perd et rencontre l'inquiétant Nils Kant. Vingt ans après, sa mère Julia, i...

Le Sang Des Pierres

By Johan Theorin

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Froid mortel

By Johan Theorin

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Roman policier (suspense)

Le Sang DES Pierres French Edition

By Johan Theorin

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L Heure Trouble Le Livre de Poche French Edition

By Johan Theorin

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L echo des morts

By Johan Theorin

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Comme dans L'Heure trouble, son précédent roman salué par la critique internationale, J. Theorin nous emmène dans l'île d'Öland à l’atmosphère si étrange. Les Westin, une famille de Stockhol...

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.