Dean Koontz Books

Odd Apocalypse

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Odd finds refuge at a rundown mansion, but soon discovers a frightening presence. ODD THOMAS SEES DEAD PEOPLE...They cannot speak to him nor do him harm; but still, it's unnerving, living between t...

Deeply Odd

By Dean Koontz

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Deeply odd

By Dean Koontz

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Odd Thomas journeys through California and Nevada after a vision about the murders of three children, an effort throughout which he befriends a series of eccentric helpers who become allies in a ba...

A Big Little Life

By Dean Koontz

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Lost Souls

By Dean Koontz

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In a powerful reworking of one of the classic stories of all time, Dr Frankenstein lives on, seemingly indestructible, more malignant than ever. Frankenstein's first monster, Deucalion, has spent t...

Lost Souls

By Dean Koontz

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Life expectancy

By Dean Koontz

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Velocity

By Dean Koontz

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This is the story of an innocent man forced by a serial killer to choose who will be murdered next. William Wiles is an easygoing thirty-something, a bartender who lives a quiet life alone until a...

The Good Guy

By Dean Koontz

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Darkest Evening of the Year

By Dean Koontz

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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.