Stefan Ahnhem Books

Victim without a face

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"Two gruesome murders have shocked the Swedish town of Helsingborg. The first victim, a thug who liked using his fists, died with his hands sawn off. His sidekick, a fan of steel-capped boots, was...

The ninth grave

By Stefan Ahnhem

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""An atmospheric and complicated saga of crimes that criss-cross the narrow strait between Sweden and Denmark...great cop characters...and some imaginatively grisly perps."-- Sunday Times Would you...

Manana te toca a ti

By Stefan Ahnhem, Rafael Pacheco

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Und morgen du

By Stefan Ahnhem

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Der Wurfelmorder

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Yuzu Olmayan Adam

By Stefan Ahnhem

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9. Mezar

By Stefan Ahnhem

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Osiemnascie stopni ponizej zera

By Stefan Ahnhem

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La novena tumba

By Stefan Ahnhem, Santiago Del Rey

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18 bajo cero

By Stefan Ahnhem, Santiago Del Rey

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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.