Jonathan Kellerman Books

Serpentine

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NEW YORK TIMES BESTSELLER • Psychologist Alex Delaware and detective Milo Sturgis search for answers to a brutal, decades-old crime in this electrifying psychological thriller from the master of su...

Serpentine

By Jonathan Kellerman

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City of the Dead

By Jonathan Kellerman

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NEW YORK TIMES BESTSELLER • The past comes back to haunt psychologist Alex Delaware and Detective Milo Sturgis when they investigate a grisly double homicide and uncover an even more unspeakable mo...

City of the Dead

By Jonathan Kellerman

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Unnatural History

By Jonathan Kellerman

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Unnatural History

By Jonathan Kellerman

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NEW YORK TIMES BESTSELLER • The most enduring detectives in American crime fiction are back in this electrifying thriller of art and brutality from the #1 New York Times bestselling master of suspe...

Unnatural History

By Jonathan Kellerman

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Half Moon Bay

By Jonathan Kellerman, Jesse Kellerman

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A Measure of Darkness

By Jonathan Kellerman, Jesse Kellerman

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Measure of Darkness

By Jonathan Kellerman, Jesse Kellerman

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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.