Dean R. Koontz Books

Lost Souls

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"Bad things are starting to happen at the Pendleton, an eerie building with a tragic past. The Pendleton stands on the summit of Shadow Hill, a palace built in the late 19th century as a tycoon's d...

City of night

By Dean Koontz

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The Frankenstein story is updated to the 21st century by the great American storyteller Dean Koontz. Now someone new is playing god. They are stronger, heal better and think faster than any humans...

Odd Interlude

By Dean Koontz

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Innocence

By Dean Koontz

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Addison Goodheart lives in solitude beneath the city, an exile from a society which will destroy him if he is ever seen. Books are his refuge and his escape: he embraces the riches they have to off...

Innocence

By Dean Koontz

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The silent corner

By Dean Koontz

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"I very much need to be dead." These are the chilling last words left by a man who had everything to live for but took his own life. In the void that remains stands his widow, FBI agent Jane Hawk,...

Saint Odd

By Dean Koontz

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A Mathematical View of Our World Text Only

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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.