Jonathan Kellerman Books

Gnadentod

By Jonathan Kellerman

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Die Tote im Griffith Park

By Jonathan Kellerman

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Die Tote im Griffith Park.

By Jonathan Kellerman

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Das Buch der Toten

By Jonathan Kellerman, Andreas Jager Translator

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Jamey

By Jonathan Kellerman

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Exit

By Jonathan Kellerman

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Bose Liebe

By Jonathan Kellerman

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Eine Tonbandkassette mit beängstigender Botschaft beschäftigt den Kinderpsychologen Dr. Delaware. Daß dies mehr als ein schlechter Scherz ist, beweisen Delawares Recherchen, die ihn auf die Spur my...

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.